update workflows + testing

Co-authored-by: promptless[bot] <promptless[bot]@users.noreply.github.com>

Author: adit-chandra

.github/workflows/pull-from-bazel-build.yml

@@ -40,6 +40,15 @@ jobs:
         with:
           bazelisk-cache: true
           repository-cache: true
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install mdx transformer dependencies
+        working-directory: tools/mdx-transform
+        run: npm ci
 
       - name: Build reference documentation
         working-directory: upstream
@@ -133,4 +142,4 @@ jobs:
             echo "Changes committed and pushed successfully"
           else
             echo "No changes detected, skipping commit"
-          fi
+          fi