Pull Request for Issue #20605

Summary of Changes

1. Add support for option `useaccess="1" ' to form field element 'plugins' (class JFormFieldPlugins)
   \libraries\joomla\form\fields\plugins

2. Use the above option in the form XML for profile edit screens
   (frontend: /components/com_users/models/forms/frontend.xml)
   (backend: /administrator/components/com_users/models/forms/profile.xml)

Testing Instructions

After installing patch

1. Set codemirror to access 'Customer Access Level (Example)'
2. Login backend and frontend as super admin (or with some other account that does not have the access level 'Customer ....'
3. Click to "edit account" in backend or "Your profile" menu link in frontend
4. Go to Basic Settings (Fieldset or Tab) and try to select editor. Verify that codemirror is no longer shown

Expected result

A user editing its own profile,
should not be able to select an editor that has an non-granted access level

thus in the above case the codemirror should not be shown

Actual result

Codemirror option is shown inside the select editor drop-down and it is selectabe

Documentation Changes Required

Yes
document new optio here (and elsewhere):
https://docs.joomla.org/Plugins_form_field_type
useaccess set to 1 to only list plugins with an allowed access level for current usertext for the form field.