node-build-test.yml - run prettier:check if present

This runscript will be added in an upcoming commit

.github/workflows/node-build-test.yml

@@ -26,6 +26,7 @@ jobs:
       with:
         node-version: ${{ matrix.node-version }}
         cache: 'npm'
+    - run: npm run prettier:check --if-present
     - run: npm ci
     - run: npm run build --workspaces --if-present
     - run: npm test