Always run the AR build

Migrating to GHA in #8886 has meant we are waiting on the AR status check to be
successful, but it doesn't always run because of the `paths-filter`.

This change removes the filter, so the action will always run.

.github/workflows/ar-ci.yml

@@ -2,9 +2,6 @@ name: AR CI
 
 on:
   push:
-    paths-ignore:
-      - "dotcom-rendering/**"
-
   workflow_dispatch:
 
 # Allow queued workflows to interrupt previous runs
@@ -71,4 +68,3 @@ jobs:
               - apps-rendering/dist/server/mobile-apps-rendering.zip
             mobile-assets:
               - apps-rendering/dist/assets/
-