chore: tab header fix

[pavelfeldman]

Fixes microsoft/playwright-cli#257

[github-actions]

Test results for "MCP"

4 failed
❌ [chrome] › mcp/autowait.spec.ts:19 › racy navigation destroys context @mcp-windows-latest
❌ [chrome] › mcp/roots.spec.ts:47 › check that trace is saved in workspace @mcp-windows-latest
❌ [chromium] › mcp/roots.spec.ts:47 › check that trace is saved in workspace @mcp-windows-latest
❌ [msedge] › mcp/roots.spec.ts:47 › check that trace is saved in workspace @mcp-windows-latest

4879 passed, 135 skipped

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Merge workflow run.