[NO GBP] ghosts can't buy heretic powers (#92464)

## About The Pull Request
well. here it happened, as foretold. whoops.
## Why It's Good For The Game
yeah uh. fuck
## Changelog
🆑
fix: ghosts can't buy heretic powers
/🆑

(cherry picked from commit 8d777d9d53)

code/modules/antagonists/_common/antag_datum.dm

@@ -124,7 +124,7 @@ GLOBAL_LIST_EMPTY(antagonists)
 /datum/antagonist/ui_act(action, list/params, datum/tgui/ui, datum/ui_state/state)
 	. = ..()
 	if(. || ui.user != owner.current)
-		return FALSE
+		return TRUE
 	switch(action)
 		if("change_objectives")
 			submit_player_objective()