FIR: Fix overrides binding for Java inheritor

`overriddenMembers` contract requires original (non-enhanced) function
See other usages

Ignored tests have been working accidentally

^KT-43289 Open

compiler/testData/codegen/box/signatureAnnotations/defaultWithKotlinBase.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // FILE: A.kt
@@ -21,4 +20,4 @@ fun box(): String {
     }
 
     return "OK"
-}
+}