Sets the action-name and associated string target value of an actionable widget.
detailed_action_name is a string in the format accepted by parse_detailed_name.
(Note that prior to version 3.22.25, this function is only usable for actions with a simple "s" target, and detailed_action_name
must be of the form `"action:GtkActionable:target"` where `action` is the action name and `target` is the string to
use as the target.)
| this |
a Actionable widget |
| detailed_action_name |
the detailed action name |