chore(bidi): add support for emulation.setNetworkConditions

[hbenl]

Fixes the following tests:

• library/popup.spec.ts:
  • "should inherit offline from browser context"
• library/browsercontext-basic.spec.ts:
  • "should work with offline option"
  • "should emulate offline event"
  • "should emulate navigator.onLine"

[github-actions]

Test results for "tests 1"

2 failed
❌ [webkit-library] › library/download.spec.ts:399 › download event › should save downloads to artifactsDir @webkit-ubuntu-22.04-node20
❌ [playwright-test] › reporter-line.spec.ts:193 › merged › should show error context with relative path @macos-latest-node20

9 flaky

⚠️ [chromium-library] › library/browser.spec.ts:24 › should create new page @smoke `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/browser.spec.ts:24 › should create new page @smoke `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/browser.spec.ts:24 › should create new page @smoke `@chromium-ubuntu-22.04-node24`
⚠️ [chromium-library] › library/browser.spec.ts:24 › should create new page @smoke `@chromium-ubuntu-22.04-node20`
⚠️ [chromium-library] › library/browser.spec.ts:24 › should create new page @smoke `@chromium-ubuntu-22.04-node22`
⚠️ [firefox-library] › library/browser.spec.ts:24 › should create new page @smoke `@firefox-ubuntu-22.04-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`
⚠️ [webkit-library] › library/browser.spec.ts:24 › should create new page @smoke `@webkit-ubuntu-22.04-node20`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:759 › run-server › should upload a folder `@webkit-ubuntu-22.04-node20`

38630 passed, 843 skipped

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Merge workflow run.

[github-actions]

Test results for "MCP"

12 failed
❌ [chrome] › mcp/init-page.spec.ts:21 › --init-page @mcp-windows-latest
❌ [chrome] › mcp/init-page.spec.ts:39 › --init-page w/ --init-script @mcp-windows-latest
❌ [chromium] › mcp/init-page.spec.ts:21 › --init-page @mcp-windows-latest
❌ [chromium] › mcp/init-page.spec.ts:39 › --init-page w/ --init-script @mcp-windows-latest
❌ [chromium] › mcp/tracing.spec.ts:21 › check that trace is saved with --save-trace @mcp-windows-latest
❌ [firefox] › mcp/init-page.spec.ts:21 › --init-page @mcp-windows-latest
❌ [firefox] › mcp/init-page.spec.ts:39 › --init-page w/ --init-script @mcp-windows-latest
❌ [webkit] › mcp/init-page.spec.ts:21 › --init-page @mcp-windows-latest
❌ [webkit] › mcp/init-page.spec.ts:39 › --init-page w/ --init-script @mcp-windows-latest
❌ [msedge] › mcp/init-page.spec.ts:21 › --init-page @mcp-windows-latest
❌ [msedge] › mcp/init-page.spec.ts:39 › --init-page w/ --init-script @mcp-windows-latest
❌ [webkit] › mcp/http.spec.ts:199 › http transport browser lifecycle (persistent) @mcp-macos-15

5121 passed, 171 skipped

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Merge workflow run.

[yury-s]

Let's resolve the merge conflict and merge.