[IR Actualizer] Fix fake-override generation in actual A -> common B -> actual C hierarchy

...  where C defines a member x and A overrides the member x

#KT-61166 Fixed

compiler/testData/diagnostics/tests/multiplatform/manyImplMemberNotImplemented.fir.kt

@@ -9,7 +9,7 @@ expect open class C1()
 expect interface I1
 
 open class A : C1(), I1
-<!MANY_IMPL_MEMBER_NOT_IMPLEMENTED{JVM}!>open class B : I1, C1()<!>
+open class B : I1, C1()
 
 expect abstract class C2()
 expect interface I2

compiler/testData/diagnostics/tests/multiplatform/manyInterfacesMemberNotImplemented.fir.kt

@@ -8,7 +8,7 @@
 expect interface S1
 expect interface S2
 
-<!MANY_INTERFACES_MEMBER_NOT_IMPLEMENTED{JVM}!>open class A : S1, S2<!>
+open class A : S1, S2
 
 class B : A()