Merge pull request swiftlang#74716 from tbkka/tbkka-mpe-descriptor-deorbit

Do not require overriding this method

Author: tbkka

include/swift/RemoteInspection/DescriptorFinder.h

@@ -126,7 +126,7 @@ struct DescriptorFinder {
   getFieldDescriptor(const TypeRef *TR) = 0;
 
   virtual std::unique_ptr<MultiPayloadEnumDescriptorBase>
-  getMultiPayloadEnumDescriptor(const TypeRef *TR) = 0;
+  getMultiPayloadEnumDescriptor(const TypeRef *TR) { abort(); };
 };
 
 } // namespace reflection