Use vitest v3, Resolve GHSA-9crc-q9x8-ghqq, GHSA-vjh7-7g9h-fjfh (backport #7340) [release/4.11.x]

[mergify]

• Resolve GHSA-9crc-q9x8-hgqq
• Resolve GHSA-vjh7-7g9h-fjfh
• Consume vitest 3.0.5 (and adjacent vitest packages like browser, coverage-v8.
• All vitest deps follow the same version number, to avoid dependency mismatch warnings when running tests.
• Bump core-geometry's global testTimeout to a minute - there's no slowdown to the CI times or locally, since the tests are running in parallel.
• Drop coverage reporting in core-frontend until the dynamic imports issue can be resolved (Opened issue).
• Import core-frontend's barrel file before running any core-frontend test suite.
• Enable parallel tests in core-frontend again. (This helps counteract the performance slowdown importing the barrel file above will have)

  ---

  This is an automatic backport of pull request Use vitest v3, Resolve GHSA-9crc-q9x8-ghqq  #7340 done by Mergify.
• Switch agent pools for CI runs, improving build times by 4 mins on Windows and Linux

[mergify]

Cherry-pick of ffa6c0f has failed:

On branch mergify/bp/release/4.11.x/pr-7340
Your branch is up to date with 'origin/release/4.11.x'.

You are currently cherry-picking commit ffa6c0f45c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	new file:   common/changes/@itwin/core-bentley/nam-fix-mismatch-vitest_2024-11-08-16-42.json
	new file:   common/changes/@itwin/core-common/nam-fix-mismatch-vitest_2024-11-08-16-42.json
	new file:   common/changes/@itwin/core-frontend/nam-fix-mismatch-vitest_2024-11-08-16-42.json
	new file:   common/changes/@itwin/core-geometry/nam-fix-mismatch-vitest_2024-11-08-16-42.json
	new file:   common/changes/@itwin/core-quantity/nam-fix-mismatch-vitest_2025-02-11-16-39.json
	modified:   core/frontend/package.json
	modified:   core/frontend/src/test/render/webgl/Technique.test.ts
	modified:   core/frontend/vitest.config.mts
	modified:   core/geometry/src/test/SimpleFactory.ts
	modified:   core/geometry/src/test/curve/Arc3d.test.ts
	modified:   core/geometry/vitest.config.mts

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   common/config/rush/pnpm-lock.yaml
	both modified:   core/bentley/package.json
	both modified:   core/common/package.json
	both modified:   core/frontend/src/test/setupTests.ts
	both modified:   core/geometry/package.json
	both modified:   core/quantity/package.json

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally