FIX: prevents user to restore message deleted by staff (#22571)

It could only occur on message created by the user itself and deleted while the user was looking at the channel.

It more generally fix the trash service which was not correctly setting the author of the delete.

plugins/chat/app/services/chat/publisher.rb

@@ -174,6 +174,7 @@ module Chat
           type: "delete",
           deleted_id: chat_message.id,
           deleted_at: chat_message.deleted_at,
+          deleted_by_id: chat_message.deleted_by_id,
           latest_not_deleted_message_id: latest_not_deleted_message_id,
         },
       )

plugins/chat/app/services/chat/trash_message.rb

@@ -50,8 +50,8 @@ module Chat
       guardian.can_delete_chat?(message, message.chat_channel.chatable)
     end
 
-    def trash_message(message:, **)
-      message.trash!
+    def trash_message(message:, guardian:, **)
+      message.trash!(guardian.user)
     end
 
     def destroy_notifications(message:, **)