ci(fdc): dump dataconnect emulator log on failure

Author: SelaseKay

.github/workflows/e2e_tests_fdc.yaml

@@ -64,6 +64,15 @@ jobs:
           unset PGSERVICEFILE
           firebase experiments:enable dataconnect
           ./start-firebase-emulator.sh
+      - name: Dump Data Connect log
+        run: |
+          cd packages/firebase_data_connect/firebase_data_connect/example
+          if [ -f dataconnect-debug.log ]; then
+            echo '--- dataconnect-debug.log ---'
+            cat dataconnect-debug.log
+          else
+            echo 'dataconnect-debug.log not found'
+          fi
       - name: Enable KVM
         run: |
           echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules