New PR to redo #19038

Thanks to @stutteringp0et for original PR.

What it does

This small change allows media fields to be used in user profiles, where a user is not authorized for core.create in com_users - they can be authorized in com_media. In conjunction with a filesystem plugin, a user can be granted access to com_media a limited area of the filesystem. This change should not impact anything other than front-end media modals.

Currently the change:

• requires administrator to enable the permissions for Media component: Registered needs to have Create permissions set to Allow
  
• provides the user with the ability to upload an image, but also select ANY media available.

A future addition / feature enhancement would be to limit user to only viewing their own media and limit uploading to just a folder for that user.

Summary of Changes

In plugins/fields/media/media.php if com_media has core.create permissions, enable the select button.
In components/com_media/src/Dispatcher/Dispatcher.php add a check to see if the user has permissions for core.create on com_media

Testing Instructions

• Create a user custom field of type media with Registered access level permissions.

• Editing your profile, the media field will have no button to open the media manager a Select button, but will not load the Media Manager when clicked because the user has no access.

• Apply this change

• Go to options for Media

• Change the permissions for the "Registered" user group, setting "create" permissions to "Allow".

• The user is now given the "Select" access to the Media Manager when they go to select an image.

Before Patch applied

Media manager will not load due to permissions issue

Expected result

Media manager loads due to Registered Users having core.create permissions set on com_media