[FIR2IR] Properly handle intersection types in interface delegation

The changes to the irText test data result in the fact that we
now unconditionally unwrap substitution overrides of delegation targets
whereas before we built an unsubstituted scope of the type we delegate
to. If we delegate to a class A : B<C>, the unsubstituted scope of
A can still contain substitution overrides for inherited generic methods
from B<T> that we didn't unwrap before but do unwrap now.

#KT-57899 Fixed

compiler/testData/ir/irText/classes/delegatedGenericImplementation.fir.ir.txt

@@ -72,7 +72,7 @@ FILE fqName:<root> fileName:/delegatedGenericImplementation.kt
         $receiver: VALUE_PARAMETER name:<this> type:C of <root>.Test1.<get-id>
         BLOCK_BODY
           RETURN type=kotlin.Nothing from='public open fun <get-id> <C> (): kotlin.collections.Map<E of <root>.Test1, C of <root>.Test1.<get-id>>? declared in <root>.Test1'
-            CALL 'public abstract fun <get-id> <C> (): kotlin.collections.Map<A of <root>.IBase, C of <root>.IBase.<get-id>>? declared in <root>.IBase' type=kotlin.collections.Map<E of <root>.Test1, C of <root>.Test1.<get-id>>? origin=null
+            CALL 'public abstract fun <get-id> <C> (): kotlin.collections.Map<A of <root>.IBase, C of <root>.IBase.<get-id>>? declared in <root>.IBase' type=kotlin.collections.Map<A of <root>.IBase, C of <root>.IBase.<get-id>>? origin=null
               <C>: C of <root>.Test1.<get-id>
               $this: GET_FIELD 'FIELD DELEGATE name:$$delegate_0 type:<root>.IBase<E of <root>.Test1> visibility:private [final]' type=<root>.IBase<E of <root>.Test1> origin=null
                 receiver: GET_VAR '<this>: <root>.Test1<E of <root>.Test1> declared in <root>.Test1.<get-id>' type=<root>.Test1<E of <root>.Test1> origin=null
@@ -89,7 +89,7 @@ FILE fqName:<root> fileName:/delegatedGenericImplementation.kt
         $receiver: VALUE_PARAMETER name:<this> type:kotlin.collections.List<D of <root>.Test1.<get-x>>
         BLOCK_BODY
           RETURN type=kotlin.Nothing from='public open fun <get-x> <D> (): D of <root>.Test1.<get-x>? declared in <root>.Test1'
-            CALL 'public abstract fun <get-x> <D> (): D of <root>.IBase.<get-x>? declared in <root>.IBase' type=D of <root>.Test1.<get-x>? origin=null
+            CALL 'public abstract fun <get-x> <D> (): D of <root>.IBase.<get-x>? declared in <root>.IBase' type=D of <root>.IBase.<get-x>? origin=null
               <D>: D of <root>.Test1.<get-x>
               $this: GET_FIELD 'FIELD DELEGATE name:$$delegate_0 type:<root>.IBase<E of <root>.Test1> visibility:private [final]' type=<root>.IBase<E of <root>.Test1> origin=null
                 receiver: GET_VAR '<this>: <root>.Test1<E of <root>.Test1> declared in <root>.Test1.<get-x>' type=<root>.Test1<E of <root>.Test1> origin=null
@@ -158,7 +158,7 @@ FILE fqName:<root> fileName:/delegatedGenericImplementation.kt
         $receiver: VALUE_PARAMETER name:<this> type:C of <root>.Test2.<get-id>
         BLOCK_BODY
           RETURN type=kotlin.Nothing from='public open fun <get-id> <C> (): kotlin.collections.Map<kotlin.String, C of <root>.Test2.<get-id>>? declared in <root>.Test2'
-            CALL 'public abstract fun <get-id> <C> (): kotlin.collections.Map<A of <root>.IBase, C of <root>.IBase.<get-id>>? declared in <root>.IBase' type=kotlin.collections.Map<kotlin.String, C of <root>.Test2.<get-id>>? origin=null
+            CALL 'public abstract fun <get-id> <C> (): kotlin.collections.Map<A of <root>.IBase, C of <root>.IBase.<get-id>>? declared in <root>.IBase' type=kotlin.collections.Map<A of <root>.IBase, C of <root>.IBase.<get-id>>? origin=null
               <C>: C of <root>.Test2.<get-id>
               $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:j type:<root>.IBase<kotlin.String> visibility:private' type=<root>.IBase<kotlin.String> origin=null
                 receiver: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.<get-id>' type=<root>.Test2 origin=null
@@ -175,7 +175,7 @@ FILE fqName:<root> fileName:/delegatedGenericImplementation.kt
         $receiver: VALUE_PARAMETER name:<this> type:kotlin.collections.List<D of <root>.Test2.<get-x>>
         BLOCK_BODY
           RETURN type=kotlin.Nothing from='public open fun <get-x> <D> (): D of <root>.Test2.<get-x>? declared in <root>.Test2'
-            CALL 'public abstract fun <get-x> <D> (): D of <root>.IBase.<get-x>? declared in <root>.IBase' type=D of <root>.Test2.<get-x>? origin=null
+            CALL 'public abstract fun <get-x> <D> (): D of <root>.IBase.<get-x>? declared in <root>.IBase' type=D of <root>.IBase.<get-x>? origin=null
               <D>: D of <root>.Test2.<get-x>
               $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:j type:<root>.IBase<kotlin.String> visibility:private' type=<root>.IBase<kotlin.String> origin=null
                 receiver: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.<get-x>' type=<root>.Test2 origin=null

compiler/testData/ir/irText/classes/implicitNotNullOnDelegatedImplementation.fir.ir.txt

@@ -138,7 +138,7 @@ FILE fqName:<root> fileName:/implicitNotNullOnDelegatedImplementation.kt
       BLOCK_BODY
         RETURN type=kotlin.Nothing from='public open fun foo (): kotlin.String declared in <root>.TestJFoo'
           TYPE_OP type=kotlin.String origin=IMPLICIT_NOTNULL typeOperand=kotlin.String
-            CALL 'public open fun foo (): @[EnhancedNullability] kotlin.String declared in <root>.JFoo' type=kotlin.String origin=null
+            CALL 'public open fun foo (): @[EnhancedNullability] kotlin.String declared in <root>.JFoo' type=@[EnhancedNullability] kotlin.String origin=null
               $this: GET_FIELD 'FIELD DELEGATE name:$$delegate_0 type:<root>.JFoo visibility:private [final]' type=<root>.JFoo origin=null
                 receiver: GET_VAR '<this>: <root>.TestJFoo declared in <root>.TestJFoo.foo' type=<root>.TestJFoo origin=null
     FIELD DELEGATE name:$$delegate_0 type:<root>.JFoo visibility:private [final]
@@ -170,7 +170,7 @@ FILE fqName:<root> fileName:/implicitNotNullOnDelegatedImplementation.kt
       BLOCK_BODY
         RETURN type=kotlin.Nothing from='public open fun foo (): kotlin.String declared in <root>.TestK1'
           TYPE_OP type=kotlin.String origin=IMPLICIT_NOTNULL typeOperand=kotlin.String
-            CALL 'public open fun foo (): @[EnhancedNullability] kotlin.String [fake_override] declared in <root>.K1' type=kotlin.String origin=null
+            CALL 'public open fun foo (): @[EnhancedNullability] kotlin.String declared in <root>.JFoo' type=@[EnhancedNullability] kotlin.String origin=null
               $this: GET_FIELD 'FIELD DELEGATE name:$$delegate_0 type:<root>.K1 visibility:private [final]' type=<root>.K1 origin=null
                 receiver: GET_VAR '<this>: <root>.TestK1 declared in <root>.TestK1.foo' type=<root>.TestK1 origin=null
     FIELD DELEGATE name:$$delegate_0 type:<root>.K1 visibility:private [final]
@@ -264,7 +264,7 @@ FILE fqName:<root> fileName:/implicitNotNullOnDelegatedImplementation.kt
       BLOCK_BODY
         RETURN type=kotlin.Nothing from='public open fun foo (): kotlin.String declared in <root>.TestK4'
           TYPE_OP type=kotlin.String origin=IMPLICIT_NOTNULL typeOperand=kotlin.String
-            CALL 'public open fun foo (): @[FlexibleNullability] kotlin.String? declared in <root>.K4' type=kotlin.String origin=null
+            CALL 'public open fun foo (): @[FlexibleNullability] kotlin.String? declared in <root>.K4' type=@[FlexibleNullability] kotlin.String? origin=null
               $this: GET_FIELD 'FIELD DELEGATE name:$$delegate_0 type:<root>.K4 visibility:private [final]' type=<root>.K4 origin=null
                 receiver: GET_VAR '<this>: <root>.TestK4 declared in <root>.TestK4.foo' type=<root>.TestK4 origin=null
     FIELD DELEGATE name:$$delegate_0 type:<root>.K4 visibility:private [final]

compiler/testData/ir/irText/classes/kt45934.fir.ir.txt

@@ -13,7 +13,7 @@ FILE fqName:<root> fileName:/kt45934.kt
       $this: VALUE_PARAMETER name:<this> type:<root>.C
       BLOCK_BODY
         RETURN type=kotlin.Nothing from='public open fun foo <C> (): @[FlexibleNullability] kotlin.collections.MutableList<@[FlexibleNullability] C of <root>.C.foo?>? declared in <root>.C'
-          CALL 'public open fun foo (): @[FlexibleNullability] kotlin.collections.MutableList<@[FlexibleNullability] kotlin.String?>? declared in <root>.J' type=@[FlexibleNullability] kotlin.collections.MutableList<@[FlexibleNullability] C of <root>.C.foo?>? origin=null
+          CALL 'public open fun foo (): @[FlexibleNullability] kotlin.collections.MutableList<@[FlexibleNullability] kotlin.String?>? declared in <root>.J' type=@[FlexibleNullability] kotlin.collections.MutableList<@[FlexibleNullability] kotlin.String?>? origin=null
             $this: GET_FIELD 'FIELD DELEGATE name:$$delegate_0 type:<root>.J visibility:private [final]' type=<root>.J origin=null
               receiver: GET_VAR '<this>: <root>.C declared in <root>.C.foo' type=<root>.C origin=null
     FIELD DELEGATE name:$$delegate_0 type:<root>.J visibility:private [final]