Drupal 10 compatibility

I have started work on this.

Replacing core/jquery.once with core/once as jquery.once is removed in D10.
Bumped version requirement to 9.2 as this is when core/once was introduced.

Testing on 10.1

Test steps

1. Enabled module
2. Added a test rule .node-form:[ label]
3. Visited node/add/page
4. Confirmed all labels were hidden
5. Pressed the "Switch to advanced" button
6. Confirmed all labels were visible

It was looking good!

But then, after clearing the cache, it all stopped working.

Investigating I found the module is placing CSS into the public://css directory.

When the cache is rebuilt either by Drush or through the UI via the performance screen - deleteAll is called on the CSS Optimizer service https://git.drupalcode.org/project/drupal/-/blob/10.1.1/core/lib/Drupal/...

This removes the CSS generated by the module.

While it would be a simple fix to change the dir - this is still a problematic was to generate the CSS which is already resolved in https://www.drupal.org/project/advancedform/issues/3230831 ✨ Support loading rules (and updating CSS) from saved configuration Fixed

I am in favour of pause this, get https://www.drupal.org/project/advancedform/issues/3230831 ✨ Support loading rules (and updating CSS) from saved configuration Fixed committed, then review this.

Automatically closed - issue fixed for 2 weeks with no activity.