Replace deprecated function editor_load() for 11.2

The .module file is only affected in 1.5.x and the other two are in 1.4.x and also 1.5.x. That's why I seperated them in two merge requests.

Hello @Imoeni, I encountered the same issue while working with the CKEditor 5 Premium Features module.
Below are the steps I followed and the results:

1. Installed the CKEditor 5 Premium Features module version 1.4.0 on a Drupal 11.2.x site.
2. Ran the Upgrade Status module to scan for deprecated functions.
3. Encountered the following error during the scan:
Call to deprecated function editor_load(). Deprecated in drupal:11.2.0 and is removed from drupal:12.0.0.
4. Applied the patch provided in MR !32.
5. Re-ran the Upgrade Status scan after applying the patch.

The patch successfully removes the two deprecation errors in Drupal 11.2.x.

salmonek → closed merge request !32

Hi,
Thank you for your contribution.

I've added few other deprecation fixes, pushed everything to 1.5.x MR and closed the 1.4.x MR

@Vinodhini
I've removed the strip_tags() as renderPlain() did return HTML and we want it in notifications.

The renderInIsolation() function and FileExists enum were added in Drupal 10.3 so I bumped the required core version. We'll release these updates in 1.6.0 - which will be released soon (will contain a new submodule), so that'll be good occasion to drop <10.3 support.
We don't want to mark Drupal 12 as supported yet, because of https://www.drupal.org/project/drupal/issues/3527914 📌 Use New installation methods for CKEditor5 Active which may land in 12.0 and will affect Premium Features module.

Reviewed and tested by our QA team, merged into 1.5.x and will be released in 1.6.0 tomorrow. In addition to bumping minimum required Drupal version, we'll have a new submodule.

Released in 1.6.0