Test `test_adaptive_context_query_selector_parsel` is flaky

[vdusek]

https://github.com/apify/crawlee-python/actions/runs/20305397716/job/58321314330?pr=1623

FAILED tests/unit/crawlers/_adaptive_playwright/test_adaptive_playwright_crawler.py::test_adaptive_context_query_selector_parsel - AssertionError: Calls not found.
Expected: [call(<class 'parsel.selector.Selector'>, '<h2>Only in browser</h2>')]
  Actual: []
===== 1 failed, 1605 passed, 8 skipped, 132 warnings in 191.72s (0:03:11) ======