ci: Add test results upload to Codecov (#14410)

.github/workflows/units-tests-reusable.yml

@@ -85,6 +85,12 @@ jobs:
         if: ${{ !inputs.skipFrontendTests }}
         run: pnpm test:frontend
 
+      - name: Upload test results to Codecov
+        if: ${{ !cancelled() }}  # Run even if tests fail
+        uses: codecov/test-results-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+
       - name: Upload coverage to Codecov
         if: inputs.collectCoverage
         uses: codecov/codecov-action@v5.1.2