Use OverrideMemberChooserObject to generate actual decls in quick-fixes

This can fix a lot of issues related to inexact generation, in particular
#KT-27093 Fixed

idea/testData/multiModuleQuickFix/enum/js/MyEnum.kt.after

@@ -5,6 +5,6 @@ actual enum class MyEnum {
     LAST;
 
     actual val num: Int
-        get() = TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+        get() = TODO("not implemented") //To change initializer of created properties use File | Settings | File Templates.
 
 }