Improve bulk adding/removing Group types

[imath]

The patch is making sure bulk adding/removing a group type functionality is more consistent with what we should expect: remove all group types when the remove bulk action was used (instead of one of the group types) and replace all group types with the selected group type for the add/set bulk action.

[vapvarun]

working great :) ​https://screencast-o-matic.com/watch/cY60jEsVtq

[imath]

Thanks for your testing 💪

[imath]

In 12767:

Administration: improve bulk remove/assign Group Types

These functionalities now behave as follows :

• Bulk removing group types is removing all assigned group types.
• Bulk assigning a group type is replacing all assigned group types with the selected group type.

Props vapvarun

Fixes #8379