feat(ci): add integration test job and rename e2e test job (#11820)

### Changes 🏗️

- Renamed the `test` job to `e2e_test` in the CI workflow for better
clarity
- Added a new `integration_test` job to the CI workflow that runs unit
tests using `pnpm test:unit`
- Created a basic integration test for the MainMarketplacePage component
to verify CI functionality

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - [x] Verified the CI workflow runs both e2e and integration tests
  - [x] Confirmed the integration test for MainMarketplacePage passes

#### For configuration changes:

- [x] `.env.default` is updated or already compatible with my changes
- [x] `docker-compose.yml` is updated or already compatible with my
changes