IR Validation: Skip INVISIBLE_FAKE members when validating descriptors

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/CheckIrElementVisitor.kt

@@ -170,7 +170,6 @@ class CheckIrElementVisitor(
             returnType.classifier is IrClassSymbol &&
             returnType.arguments.isEmpty()
         ) {
-
             expression.ensureTypeIs(returnType)
         }
 
@@ -258,6 +257,7 @@ class CheckIrElementVisitor(
 
             val allDescriptors = declaration.descriptor.unsubstitutedMemberScope
                 .getContributedDescriptors().filterIsInstance<CallableMemberDescriptor>()
+                .filter { it.visibility != DescriptorVisibilities.INVISIBLE_FAKE }
 
             val presentDescriptors = declaration.declarations.map { it.descriptor }
 

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/phaser/DumperVerifier.kt

@@ -131,7 +131,7 @@ fun <Data, Context> dumpToStdout(
 
 val defaultDumper = makeDumpAction(dumpToStdout(::dumpIrElement) + dumpToFile("ir", ::dumpIrElement))
 
-fun <Fragment : IrElement> validationCallback(context: CommonBackendContext, fragment: Fragment, checkProperties: Boolean = false) {
+fun validationCallback(context: CommonBackendContext, fragment: IrElement, checkProperties: Boolean = false) {
     val validatorConfig = IrValidatorConfig(
         abortOnError = true,
         ensureAllNodesAreDifferent = true,