Pull Request for Issue #45173.

Summary of Changes

Fixed an issue where TinyMCE editor presets assigned to specific user groups were not being correctly applied when a user belonged to multiple groups in the hierarchy. The code now prioritizes presets based on group specificity, ensuring the most direct user group's preset takes precedence.

Testing Instructions

1. Set the default editor to "TinyMCE"
2. Create a user assigned to Publisher group
3. Go to System > Plugins > Editor - TinyMCE
4. Assign "Set 2" to "Publisher" and save
5. Go to frontend and login as the Publisher user
6. Edit an article

Actual result BEFORE applying this Pull Request

TinyMCE loads "Set 0" (the largest set of tools) instead of the assigned "Set 2".

Expected result AFTER applying this Pull Request

TinyMCE correctly loads "Set 2" (simple set of tools) as assigned to the Publisher group.

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org:

• No documentation changes for manual.joomla.org needed