FIR: change callableId of fake overrides to derived class owner

compiler/testData/codegen/box/callableReference/function/booleanNotIntrinsic.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box(): String {
     if ((Boolean::not)(true) != false) return "Fail 1"
     if ((Boolean::not)(false) != true) return "Fail 2"

compiler/testData/codegen/box/callableReference/function/nestedConstructorFromClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A {
     class Nested {
         val o = 111