Rolling Playwright-Python to the latest Playwright driver

checkout repo: git clone https://github.com/microsoft/playwright-python
make sure local python is 3.10 or newer
- create virtual environment, if don't have one: python -m venv env
activate venv: source env/bin/activate
install all deps:

python -m pip install --upgrade pip
pip install -r local-requirements.txt
pre-commit install
pip install -e .

change the driver pin in DRIVER_VERSION (the playwright-core npm version, e.g. 1.61.0) and refresh NODE_VERSION: python scripts/update_node_version.py
download the new driver: python -m build --wheel (fetches playwright-core via npm pack + the matching Node.js binary and assembles the bundle; no source build).
generate API from the docs. This needs a separate microsoft/playwright checkout used only for rolls, on the exact release branch for the new version (e.g. release-1.64), clean and up to date with origin: PW_SRC_DIR=../playwright-for-python ./scripts/update_api.sh
run mypy playwright: every error in _generated.py points at an implementation method in playwright/_impl/ that lacks a new member or option. Implement it there, or record the difference in scripts/codegen/python_rules.js.
commit changes & send PR
wait for bots to pass & merge the PR

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