fix: add artifact handling for API v2 E2E tests (#26249)

* fix: add artifact handling for API v2 E2E tests

- Add jest-junit reporter to generate JUnit XML test results
- Update workflow to upload from correct path (apps/api/v2/test-results)
- Add if-no-files-found: ignore and retention-days: 30 for consistency

Co-Authored-By: keith@cal.com <keithwillcode@gmail.com>

* Apply suggestion from @keithwillcode

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

.github/workflows/e2e-api-v2.yml

@@ -88,4 +88,6 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: test-results-api-v2-shard-${{ matrix.shard }}
-          path: test-results
+          path: apps/api/v2/test-results
+          if-no-files-found: ignore
+          retention-days: 7