test: fix flaky test test_isolation_cookies for playwright crawler #279

Job	Run time
PR title check	3s
Code checks / Actions lint check	35s
Code checks / Type check / Type check (3.12)	25s
Code checks / Lint check / Lint check (3.11)	27s
Code checks / Lint check / Lint check (3.13)	32s
Code checks / Type check / Type check (3.13)	29s
Code checks / Spell check	6s
Code checks / Lint check / Lint check (3.14)	25s
Doc checks / Doc checks / Docs check	2m 1s
Code checks / Lint check / Lint check (3.10)	25s
Code checks / Type check / Type check (3.14)	28s
Code checks / Lint check / Lint check (3.12)	26s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	4m 53s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	4m 23s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	3m 34s
Code checks / Type check / Type check (3.11)	29s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	6m 16s
Tests / Unit tests / Unit tests (macos-latest, 3.14)	6m 51s
Tests / Unit tests / Unit tests (macos-latest, 3.13)	3m 50s
Tests / Unit tests / Unit tests (macos-latest, 3.12)	9m 0s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	6m 22s
Tests / Unit tests / Unit tests (macos-latest, 3.10)	11m 51s
Tests / Unit tests / Unit tests (macos-latest, 3.11)	9m 2s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	4m 30s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	6m 43s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	6m 49s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	7m 10s
Code checks / Type check / Type check (3.10)	32s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	6m 57s
	1h 45m 34s

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