Action stuff (#31305)

* Action stuff

- Cleanup some event stuff
- Avoid dirtying entity unnecessarily
- Add ActionGrant as an easy way to apply / remove actions via compregistry.

* Fix merge

Content.Client/Actions/ActionsSystem.cs

@@ -259,12 +259,6 @@ namespace Content.Client.Actions
 
             if (action.ClientExclusive)
             {
-                if (instantAction.Event != null)
-                {
-                    instantAction.Event.Performer = user;
-                    instantAction.Event.Action = actionId;
-                }
-
                 PerformAction(user, actions, actionId, instantAction, instantAction.Event, GameTiming.CurTime);
             }
             else