chore: deduplicate msToString and bytesToString into isomorphic/formatUtils

[pavelfeldman]

Summary

• Extract duplicated msToString and bytesToString formatting utilities into a single shared file at utils/isomorphic/formatUtils.ts
• Remove 4 duplicate implementations from uiUtils.ts, traceCli.ts, utilsBundle.ts, and html-reporter/utils.ts
• Update all consumers across trace-viewer, html-reporter, recorder, and reporters to import from the shared location

[github-actions]

Test results for "MCP"

1 failed
❌ [chrome] › mcp/cli-session.spec.ts:45 › close named session @mcp-macos-latest

5506 passed, 343 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

1 failed
❌ [playwright-test] › playwright.spec.ts:122 › should override any headless option with --headed @ubuntu-latest-node22

5 flaky

⚠️ [chromium-library] › library/popup.spec.ts:261 › should not throw when click closes popup `@chromium-ubuntu-22.04-arm-node20`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1223 › should display language-specific locators `@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-library] › library/trace-viewer.spec.ts:1223 › should display language-specific locators `@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`

38815 passed, 845 skipped

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Merge workflow run.