This is a manual forwardport of rev. b466b3bc60.
Consider the following scenario: open in edit mode a form view
containing a many2many field displayed with widget many2many_tags,
on the many2many field dropdown, click on 'Search More' (it opens
a dialog), and in the dialog, try to save the current search in
the searchview's favorite menu.
Before this rev., it crashed because it tried to retrieve the
action's context (to add to the saved filter), whereas there is no
action in this case.
Actually, the action's context should never been used in this case.
What must be used is the controller's context (this mainly makes
sense for Pivot and Graph views).
Fixes#23293
Aaron Bohy
cdb01d52ea