chore: fix deployment to firebase hosting

.github/workflows/build.yml

@@ -181,6 +181,7 @@ jobs:
       - "client"
       - "python-build-package"
     steps:
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
@@ -223,7 +224,6 @@ jobs:
         with:
           firebaseServiceAccount: "${{ secrets.FIREBASE_HOSTING_SERVICE_ACCOUNT_KEY }}"
           projectId: neuroglancer-demo
-        if: ${{ startsWith(github.ref, 'refs/tags/v') }}
 
   ngauth:
     strategy: