always show overloaded function notes to remain consistent

Author: MechanicalConstruct

mypy/messages.py

@@ -872,11 +872,8 @@ def incompatible_argument_note(
                 self.note_call(original_caller_type, call, context, code=code)
         if isinstance(callee_type, Instance) and callee_type.type.is_protocol:
             call = find_member("__call__", callee_type, callee_type, is_operator=True)
-            if call is not None:
-                item = get_proper_type(call)
-                # should we print out all possible overloadings?
-                if not (isinstance(item, Overloaded)):
-                    self.note_call(callee_type, call, context, code=code)
+            if call:
+                self.note_call(callee_type, call, context, code=code)
         self.maybe_note_concatenate_pos_args(original_caller_type, callee_type, context, code)
 
     def maybe_note_concatenate_pos_args(

test-data/unit/check-protocols.test

@@ -2560,7 +2560,8 @@ def func(caller: Caller) -> None:
     pass
 
 func(call)
-func(bad)  # E: Argument 1 to "func" has incompatible type "Callable[[Union[int, str]], Union[int, str]]"; expected "Caller"
+func(bad)  # E: Argument 1 to "func" has incompatible type "Callable[[Union[int, str]], Union[int, str]]"; expected "Caller" \
+           # N: "Caller.__call__" has type overloaded function
 [out]
 
 [case testCallableImplementsProtocolExtraNote]