fix(tests): use platform-safe timeout method

[Ghraven]

Problem

The pytest config forces pytest-timeout to use --timeout-method=signal. That method is POSIX-specific and is not available on Windows, so Windows contributors cannot run the test suite with the repository's default pytest config.

Before / after

Before, running pytest on Windows with the configured timeout plugin failed because the signal timeout method is not supported.

After, the config keeps the same --timeout=30 per-test cap but leaves the timeout method unset, allowing pytest-timeout to choose its platform-safe default (signal on POSIX, thread on Windows).

Verification

Ran locally on Windows:

uv run --extra dev pytest tests\test_base_url_hostname.py -q

Result: 25 passed.

Also ran:

git diff --check origin/main...HEAD

[Ghraven]

Closing this after rebasing against current main. Upstream has already removed the forced pytest-timeout signal method here, and current main now uses only the non-integration marker in addopts, so this branch is obsolete and would no longer be the right patch. Thanks!

[alt-glitch]

This was generated by AI during triage.
Duplicate of #39881 (merged 2026-06-09), which already removed --timeout-method=signal; current main carries the cross-platform fix. Same one-line pyproject change as the prior #43182/#40044. Closed.