feat: verify all packages exist on npmjs

TICKET: VL-4704

Author: louib

.github/workflows/ci.yml

@@ -353,6 +353,17 @@ jobs:
 
           echo "✅ Docker image tests passed"
 
+  verify-npm-packages:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Verify all packages exist on npm
+        uses: ./.github/actions/verify-npm-packages
+
   dockerfile-check:
     runs-on: ubuntu-latest