feat(mcp): support electron

[yury-s]

Fixes microsoft/playwright-cli#229

[github-actions]

Test results for "tests 1"

1 failed
❌ [playwright-test] › reporter-html.spec.ts:156 › merged › should include image diff @macos-latest-node20

6 flaky

⚠️ [chromium-library] › library/video.spec.ts:118 › screencast › should capture static page `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/video.spec.ts:724 › screencast › should work with video+trace `@chromium-ubuntu-22.04-arm-node20`
⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:1080 › cli codegen › should not throw csp directive violation errors `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-wait-for-function.spec.ts:104 › should work with strict CSP policy `@firefox-ubuntu-22.04-node20`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:775 › launchServer › should upload a folder `@webkit-ubuntu-22.04-node20`

39135 passed, 846 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

4 failed
❌ [firefox] › mcp/launch.spec.ts:101 › isolated context @mcp-windows-latest
❌ [firefox] › mcp/sse.spec.ts:88 › sse transport browser lifecycle (isolated) @mcp-windows-latest
❌ [firefox] › mcp/sse.spec.ts:118 › sse transport browser lifecycle (isolated, multiclient) @mcp-windows-latest
❌ [msedge] › mcp/files.spec.ts:106 › clicking on download link emits download @mcp-windows-latest

6308 passed, 383 skipped

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Merge workflow run.