Error handling wrappers with `**kwargs` syntax

Bug Report

mypy seems to be unable to pass down the types of **kwargs arguments properly.

To Reproduce

def my_function(flag: bool = True, **kwargs: str) -> None:
    ...


def wrapper(**kwargs: str) -> None:
    my_function(**kwargs)

Playground Link

Actual Behavior

main.py:6: error: Argument 1 to "my_function" has incompatible type "**Dict[str, str]"; expected "bool"  [arg-type]
Found 1 error in 1 file (checked 1 source file)

Expected Behavior

I would expect no errors. Though I can see that inputting flag="hello" could cause issues, although the error message does not help in identifying this. Also, in that case, I would expect rewriting the wrapper like below would satisfy mypy (it doesn't):

def wrapper(**kwargs: str) -> None:
    if "flag" in kwargs:
        raise
    my_function(**kwargs)

Your Environment

• Mypy version used: 1.3.0
• Python version used: 3.11.2

The issue names no repository files or tests; start with the minimal Python reproducer and its linked mypy-play playground. Trace how calls using **kwargs are checked, then verify the valid wrapper is accepted while the flag="hello" case receives appropriate handling, adding a regression test once the relevant checker tests are located.