Mypy: Argument 3 to "to_thread" has incompatible type "Path"; expected "_StrOrBytesPathT"

[helltraitor]

Bug Report

I was trying to make async wrapper over shutil.copyfile and met a problem:
Mypy: Argument 3 to "to_thread" has incompatible type "Path"; expected "_StrOrBytesPathT"

To Reproduce

import asyncio
import shutil

from pathlib import Path


async def aiocopy_file(src: Path, dst: Path) -> None:
    await asyncio.to_thread(shutil.copyfile, src, dst, follow_symlinks=False)
    #                                             ~~~

Expected Behavior

dst argument is acceptable for using (At least I didn't see any problems in code below and while using copyfile in console).
But this code passes check:

def copy(src: Path, dst: Path) -> None:
    shutil.copyfile(src, dst)

Actual Behavior

For some reason, MyPy says that third argument (which is second for shutil.copyfile) is wrong type.

Your Environment

• Mypy version used: 0.971
• Mypy command-line flags: I use external tool but doesn't provide any special arguments
• Mypy configuration options from mypy.ini (and other config files): no file
• Python version used: 3.10.4
• Operating system and version: Windows 10 Pro (19044.1826 21H1)
• PyCharm CE:
• • PyCharm 2022.1.3 (Community Edition)
• • Build #PC-221.5921.27, built on June 22, 2022
• • Runtime version: 11.0.15+10-b2043.56 amd64
• • VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.

Warning
I'm not pro with mypy, so try to reproduce this bug and text me if you cannot for some reasons.

[AlexWaygood]

Here's a minimal repro of this problem (which reproduces on the master branch) that doesn't depend on the typeshed stubs for asyncio.to_thread or shutil.copyfile:

from typing import Callable, TypeVar
from typing_extensions import ParamSpec

P = ParamSpec("P")
T = TypeVar("T")

def higher_order(func: Callable[P, T], *args: P.args, **kwargs: P.kwargs) -> T: ...
def identity(arg: T) -> T: ...
higher_order(identity, 'foo')  # error: Argument 2 to "higher_order" has incompatible type "str"; expected "T"

[AlexWaygood]

Duplicate of #12278