[FIR] Don't remove subsumed members from intersection overrides's overriddens

This fixes a bunch of missing overridden symbols in IR.
This is also required for fixing KT-59921 in the following commit
where we need to keep all overridden symbols of intersection overrides
so that we can enhance them properly.

#KT-57300 Fixed
#KT-57299 Fixed
#KT-59921
#KT-57300
#KT-62788
#KT-64271
#KT-64382

compiler/testData/codegen/box/functions/delegatedPropertyWithMultipleOverriddens_generics.fir.ir.txt

@@ -83,14 +83,17 @@ FILE fqName:<root> fileName:/delegatedPropertyWithMultipleOverriddens_generics.k
     FUN FAKE_OVERRIDE name:foo visibility:public modality:ABSTRACT <> ($this:<root>.MyList<E4 of <root>.MyMutableList>) returnType:E4 of <root>.MyMutableList [fake_override]
       overridden:
         public abstract fun foo (): E2 of <root>.MyList declared in <root>.MyList
+        public abstract fun foo (): E3 of <root>.MyMutableCollection declared in <root>.MyMutableCollection
       $this: VALUE_PARAMETER name:<this> type:<root>.MyList<E4 of <root>.MyMutableList>
     PROPERTY FAKE_OVERRIDE name:bar visibility:public modality:ABSTRACT [fake_override,val]
       overridden:
         public abstract bar: E2 of <root>.MyList
+        public abstract bar: E3 of <root>.MyMutableCollection
       FUN FAKE_OVERRIDE name:<get-bar> visibility:public modality:ABSTRACT <> ($this:<root>.MyList<E4 of <root>.MyMutableList>) returnType:E4 of <root>.MyMutableList [fake_override]
         correspondingProperty: PROPERTY FAKE_OVERRIDE name:bar visibility:public modality:ABSTRACT [fake_override,val]
         overridden:
           public abstract fun <get-bar> (): E2 of <root>.MyList declared in <root>.MyList
+          public abstract fun <get-bar> (): E3 of <root>.MyMutableCollection declared in <root>.MyMutableCollection
         $this: VALUE_PARAMETER name:<this> type:<root>.MyList<E4 of <root>.MyMutableList>
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
       overridden:

compiler/testData/codegen/box/functions/delegatedPropertyWithMultipleOverriddens_generics.kt

@@ -1,7 +1,5 @@
 // ISSUE: KT-55828
 // DUMP_IR
-// IGNORE_CODEGEN_WITH_IR_FAKE_OVERRIDE_GENERATION: extra overridden symbols for declarations in MyMutableList.
-//   ^ This is most likely not a problem, and IR dump can be changed once IR fake override generation is enabled by default.
 // JVM_ABI_K1_K2_DIFF: KT-63828
 
 

compiler/testData/codegen/box/functions/delegatedPropertyWithMultipleOverriddens_noGenerics.fir.ir.txt

@@ -79,14 +79,17 @@ FILE fqName:<root> fileName:/delegatedPropertyWithMultipleOverriddens_noGenerics
     FUN FAKE_OVERRIDE name:foo visibility:public modality:ABSTRACT <> ($this:<root>.MyList) returnType:kotlin.String [fake_override]
       overridden:
         public abstract fun foo (): kotlin.String declared in <root>.MyList
+        public abstract fun foo (): kotlin.String declared in <root>.MyMutableCollection
       $this: VALUE_PARAMETER name:<this> type:<root>.MyList
     PROPERTY FAKE_OVERRIDE name:bar visibility:public modality:ABSTRACT [fake_override,val]
       overridden:
         public abstract bar: kotlin.String
+        public abstract bar: kotlin.String
       FUN FAKE_OVERRIDE name:<get-bar> visibility:public modality:ABSTRACT <> ($this:<root>.MyList) returnType:kotlin.String [fake_override]
         correspondingProperty: PROPERTY FAKE_OVERRIDE name:bar visibility:public modality:ABSTRACT [fake_override,val]
         overridden:
           public abstract fun <get-bar> (): kotlin.String declared in <root>.MyList
+          public abstract fun <get-bar> (): kotlin.String declared in <root>.MyMutableCollection
         $this: VALUE_PARAMETER name:<this> type:<root>.MyList
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
       overridden:

compiler/testData/codegen/box/functions/delegatedPropertyWithMultipleOverriddens_noGenerics.kt

@@ -1,7 +1,5 @@
 // ISSUE: KT-55828
 // DUMP_IR
-// IGNORE_CODEGEN_WITH_IR_FAKE_OVERRIDE_GENERATION: extra overridden symbols for declarations in MyMutableList.
-//   ^ This is most likely not a problem, and IR dump can be changed once IR fake override generation is enabled by default.
 // JVM_ABI_K1_K2_DIFF: KT-63828
 
 interface MyCollection {