Errors for incorrect type on `**kwargs` should give the name of the argument

Bug Report

In case of **kwargs being passed to an overloaded function, one issue gets raised for every overload of that function. This problem is not present when passing a regular incompatible type to that overloaded function, eg. int

To Reproduce

import json
from typing import Any

def load(data: str, **kwargs: object) -> Any:
    return json.loads(data, **kwargs)

Gist: https://mypy-play.net/?mypy=master&python=3.11&gist=8d7f8bb50c5f9022469b59ec127df614

The bug won't reproduce for eg. if **kwargs: object was replaced with x: object.

Expected Behavior

Single issue being raised.

Actual Behavior

$ mypy asd.py
asd.py:5: error: Argument 2 to "loads" has incompatible type "**dict[str, object]"; expected "type[JSONDecoder] | None"  [arg-type]
asd.py:5: error: Argument 2 to "loads" has incompatible type "**dict[str, object]"; expected "Callable[[dict[Any, Any]], Any] | None"  [arg-type]
asd.py:5: error: Argument 2 to "loads" has incompatible type "**dict[str, object]"; expected "Callable[[str], Any] | None"  [arg-type]
asd.py:5: error: Argument 2 to "loads" has incompatible type "**dict[str, object]"; expected "Callable[[list[tuple[Any, Any]]], Any] | None"  [arg-type]
Found 4 errors in 1 file (checked 1 source file)

Start by running the provided mypy-play reproducer or the shown mypy asd.py command, then trace how overloaded calls handle **kwargs diagnostics. Done means the example reports one incompatible-argument error rather than one error per overload, with a regression test covering the behavior.