fix(routing): match ws(s) baseURL rewrite case-insensitively

[chatman-media]

toWebSocketBaseUrl only rewrote an http(s) baseURL to ws(s) when the scheme happened to be lowercase, so something like baseURL: 'HTTP://x.com' was left as-is and routeWebSocket() / waitForEvent('websocket') would just never match. URI schemes are case-insensitive per RFC 3986, and the rest of urlMatch.ts already treats them that way (see the origin handling a few lines down), so this just brings the ws(s) rewrite in line with that. Added a test with an uppercase HTTP:// baseURL that fails on main and passes with the fix.

[github-actions]

Test results for "MCP"

4 failed
❌ [chromium] › mcp/annotate.spec.ts:173 › user-initiated annotate downloads zip with feedback.md @mcp-macos-latest-chromium
❌ [chromium] › mcp/http.spec.ts:349 › client should receive list roots request @mcp-ubuntu-latest-chromium
❌ [firefox] › mcp/dashboard.spec.ts:125 › daemon show: closing page exits the process @mcp-windows-latest-firefox
❌ [webkit] › mcp/http.spec.ts:349 › client should receive list roots request @mcp-ubuntu-latest-webkit

7457 passed, 1132 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

4 flaky

⚠️ [chromium-library] › library/chromium/oopif.spec.ts:282 › should click `@frozen-time-library-chromium-linux`
⚠️ [chromium-library] › library/har-websocket.spec.ts:235 › should attach websocket messages `@realtime-time-library-chromium-linux`
⚠️ [chromium-library] › library/video.spec.ts:337 › screencast › should work for popups `@realtime-time-library-chromium-linux`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@firefox-ubuntu-22.04-node20`

49225 passed, 1163 skipped

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Merge workflow run.

[pavelfeldman]

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[chatman-media]

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