Refine special bridge generating rule

Generate special bridge even in case current class has Kotlin superclass implementing
this builtin method, but that super class was generated without special bridge
(e.g. because it would have the same signature)

 #KT-9901 Fixed

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/specialBuiltinMembers.kt

@@ -270,7 +270,7 @@ private val CallableMemberDescriptor.propertyIfAccessor: CallableMemberDescripto
 
 private fun CallableDescriptor.fqNameOrNull(): FqName? = fqNameUnsafe.check { it.isSafe }?.toSafe()
 
-private fun CallableMemberDescriptor.firstOverridden(
+public fun CallableMemberDescriptor.firstOverridden(
         predicate: (CallableMemberDescriptor) -> Boolean
 ): CallableMemberDescriptor? {
     var result: CallableMemberDescriptor? = null