Incompatible typing for `logging.Formatter.converter` and `time.gmtime`/`time/localtime` ?

The typing for converter here is as follows:

converter: Callable[[float | None], struct_time]

And the typing for time.gmtime/time.localtime here is:

def gmtime(seconds: float | None = None, /) -> struct_time: ...
def localtime(seconds: float | None = None, /) -> struct_time: ...

Yet when I try to typecheck this code:

import logging
import time

class UTCFormatter(logging.Formatter):
    converter = time.gmtime

I get the following error:

$ mypy main.py
main.py:5: error: Incompatible types in assignment (expression has type "Callable[[], struct_time]", base class "Formatter" defined the type as "Callable[[float | None], struct_time]")  [assignment]
Found 1 error in 1 file (checked 1 source file)

I tested this on a fresh python3.13 venv with the following deps installed:

mypy==1.18.2
mypy_extensions==1.1.0
pathspec==0.12.1
typing_extensions==4.15.0

Start with stdlib/logging/init.pyi and stdlib/time.pyi at the referenced definitions, then reproduce the assignment with mypy using the example in the issue. Check why the two callable annotations are treated as incompatible and update the relevant stub typing so the example type-checks without an assignment error.