FIR2IR: fix problems with enum entry / anonymous object visibility

compiler/testData/ir/irText/singletons/enumEntry.fir.txt

@@ -6,12 +6,12 @@ FILE fqName:<root> fileName:/enumEntry.kt
         DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
         INSTANCE_INITIALIZER_CALL classDescriptor='CLASS ENUM_CLASS name:Z modality:FINAL visibility:public superTypes:[kotlin.Enum<<root>.Z>]'
     ENUM_ENTRY name:ENTRY
-      class: CLASS ENUM_ENTRY name:ENTRY modality:FINAL visibility:local superTypes:[<root>.Z]
+      class: CLASS ENUM_ENTRY name:ENTRY modality:FINAL visibility:private superTypes:[<root>.Z]
         $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Z.ENTRY
         CONSTRUCTOR visibility:private <> () returnType:<uninitialized parent>.<anonymous> [primary]
           BLOCK_BODY
             DELEGATING_CONSTRUCTOR_CALL 'private constructor <init> () [primary] declared in <root>.Z'
-            INSTANCE_INITIALIZER_CALL classDescriptor='CLASS ENUM_ENTRY name:ENTRY modality:FINAL visibility:local superTypes:[<root>.Z]'
+            INSTANCE_INITIALIZER_CALL classDescriptor='CLASS ENUM_ENTRY name:ENTRY modality:FINAL visibility:private superTypes:[<root>.Z]'
         FUN name:test visibility:public modality:FINAL <> ($this:<root>.Z.ENTRY) returnType:kotlin.Unit
           $this: VALUE_PARAMETER name:<this> type:<root>.Z.ENTRY
           BLOCK_BODY

compiler/testData/ir/irText/singletons/enumEntry.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: ANY
 enum class Z {
     ENTRY {
         fun test() {}