Add inline context about the new step.

Author: desrosj

.github/workflows/reusable-javascript-tests.yml

@@ -50,6 +50,9 @@ jobs:
       - name: Install npm Dependencies
         run: npm ci
 
+      # Older branches using outdated versions of Puppeteer fail on newer versions of the `ubuntu-24` image.
+      # This disables AppArmor in order to work around those failures.
+      #
       # See https://issues.chromium.org/issues/373753919
       # and https://chromium.googlesource.com/chromium/src/+/main/docs/security/apparmor-userns-restrictions.md
       - name: Disable AppArmor