[Bug]: The Python version of Playwright is not compatible with PEP-749/PEP-649 annotation semantics

Version

1.63.0

Steps to reproduce

On Python 3.14+ execute the following minimal reproducer using pytest with pytest-playwright installed.

from playwright.sync_api import Page

def test_has_title(page: Page) -> None:
    def callback(msg: Unresolvable) -> None:
        pass

    page.on('console', callback)
    page.goto("https://playwright.dev/")

Expected behavior

The given example passes without errors

Actual behavior

NameError is emitted for Unresolved despite not being needed by playwright in order to function correctly.

Additional context

The Python version makes use of inspect.signature to inspect the parameters of callbacks passed to methods like Page.on, but does not make use of the newly added format parameter in Python 3.14+, despite not needing to inspect the annotations.

It's best practice to use Format.FORWARDREF or Format.STRING if you don't need to inspect annotations, so the deferred execution of the annotations does not result in a NameError for any symbols only defined inside an if TYPE_CHECKING block.

I recommend writing a little compat helper like the following:

import inspect
import sys

if sys.version_info < (3, 14):
    def get_signature(fn):
        return inspect.signature(fn)
else:
    from annotationlib import Format

    def get_signature(fn):
         return inspect.signature(fn, annotation_format=Format.FORWARDREF)

And using that instead of directly calling inspect.signature in the two places playwright currently uses it.

Environment

System:
    OS: Linux 7.2 openSUSE Tumbleweed 20260915
    CPU: (8) x64 AMD Ryzen 7 PRO 3700U w/ Radeon Vega Mobile Gfx
    Memory: 8.13 GB / 21.38 GB
    Container: Yes
  Binaries:
    Node: 24.18.1 - /usr/bin/node
    npm: 2.15.12 - /home/david/git/onegov-cloud/node_modules/.bin/npm
  Languages:
    Bash: 5.3.15 - /usr/bin/bash