fix: Check build changes

Signed-off-by: Julius Härtl <[email protected]>

.github/workflows/update-node-dist.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      # implemented since 28, once branched off, add you stable branch here
+      # implemented since 28, once branched off, add your stable branch here
       - main
       - ci/node-dist-workflow
       # - stable28
@@ -44,7 +44,15 @@ jobs:
         run: |
           npm ci
           npm run build --if-present
+
+      - name: Check webpack build changes
+        id: changes
+        continue-on-error: true
+        run: |
+          bash -c "[[ ! \"`git status --porcelain `\" ]] || (echo 'Please recompile and commit the assets, see the section \"Show changes on failure\" for details' && exit 1)"
+
       - name: Add and commit
+        if: steps.changes.outcome == 'failure'
         run: |
           git add --force js/
           git commit --signoff -m 'chore(assets): recompile assets'