FIR: introduce MANY_*_MEMBER_NOT_IMPLEMENTED diagnostic

compiler/testData/diagnostics/tests/delegation/Delegation_ClashingFunctions.fir.kt

@@ -10,9 +10,9 @@ interface Three {
     public fun foo(): String
 }
 
-class Test123(val v1: One, val v2: Two, val v3: Three) : One by v1, Two by v2, Three by v3 { }
-class Test132(val v1: One, val v2: Two, val v3: Three) : One by v1, Three by v3, Two by v2 { }
-class Test312(val v1: One, val v2: Two, val v3: Three) : Three by v3, One by v1, Two by v2 { }
-class Test321(val v1: One, val v2: Two, val v3: Three) : Three by v3, Two by v2, One by v1 { }
-class Test231(val v1: One, val v2: Two, val v3: Three) : Two by v2, Three by v3, One by v1 { }
-class Test213(val v1: One, val v2: Two, val v3: Three) : Two by v2, One by v1, Three by v3 { }
+<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test123<!>(val v1: One, val v2: Two, val v3: Three) : One by v1, Two by v2, Three by v3 { }
+<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test132<!>(val v1: One, val v2: Two, val v3: Three) : One by v1, Three by v3, Two by v2 { }
+<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test312<!>(val v1: One, val v2: Two, val v3: Three) : Three by v3, One by v1, Two by v2 { }
+<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test321<!>(val v1: One, val v2: Two, val v3: Three) : Three by v3, Two by v2, One by v1 { }
+<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test231<!>(val v1: One, val v2: Two, val v3: Three) : Two by v2, Three by v3, One by v1 { }
+<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class Test213<!>(val v1: One, val v2: Two, val v3: Three) : Two by v2, One by v1, Three by v3 { }

compiler/testData/diagnostics/tests/delegation/Delegation_MultipleDelegates.fir.kt

@@ -1,19 +0,0 @@
-// !DIAGNOSTICS: -CONFLICTING_JVM_DECLARATIONS
-interface One {
-  public <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun foo() : Int
-  private fun boo() = 10
-}
-interface Two {
-  public <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun foo() : Int
-}
-
-interface OneImpl : One {
-  public override fun foo() = 1
-}
-interface TwoImpl : Two {
-  public override fun foo() = 2
-}
-
-class Test1() : TwoImpl, OneImpl {}
-class Test2(a : One) : One by a, Two {}
-class Test3(a : One, b : Two) : Two by b, One by a {}

compiler/testData/diagnostics/tests/delegation/Delegation_MultipleDelegates.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -CONFLICTING_JVM_DECLARATIONS
 interface One {
   public <!REDUNDANT_OPEN_IN_INTERFACE!>open<!> fun foo() : Int

compiler/testData/diagnostics/tests/delegation/memberHidesSupertypeOverride/sameDelegationInHierarchy.fir.kt

@@ -9,7 +9,7 @@ class Delegate : Base {
 public open class MyClass : Base by Delegate()
 
 fun box(): String {
-    object : MyClass(), Base by Delegate() {
+    <!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>object<!> : MyClass(), Base by Delegate() {
     }
     return "OK"
 }