fix: run unit test on default branch to upload coverage to Codecov (#1056)

Signed-off-by: Shouren Yang <[email protected]>

Author: Shouren

.github/workflows/ci.yaml

@@ -87,7 +87,7 @@ jobs:
     name: Unit test
     needs: [ lint, get_info ] # rely on lint & get_info successful completion
     runs-on: ubuntu-22.04
-    if: needs.get_info.outputs.e2e_run == 'true'
+    if: needs.get_info.outputs.e2e_run == 'true' || github.ref == 'refs/heads/master'
     steps:
       - name: Checkout code
         uses: actions/checkout@v4