feat(mcp): allow configuring timeouts

[pavelfeldman]

Fixes microsoft/playwright-mcp#748

[github-actions]

Test results for "tests 1"

4 flaky

⚠️ [chromium-library] › library/chromium/oopif.spec.ts:284 › should click `@chromium-ubuntu-22.04-node24`
⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1079 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node18`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@firefox-ubuntu-22.04-node18`
⚠️ [webkit-library] › library/inspector/cli-codegen-pick-locator.spec.ts:35 › should update locator highlight `@webkit-ubuntu-22.04-node18`

46764 passed, 821 skipped

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Merge workflow run.