fixes a few problems in ai targetting (#82998)

## About The Pull Request
fixes #82964 , fixes #82866

## Why It's Good For The Game
fixes several problems with ai targetting. this pr resolves civil war
that was brewing between several mobs. also fixes a major problem where
mobs would only search for targets and not perform any other behaviors.
also fixes a small problem where mobs would constantly stop and start
while chasing targets
## Changelog
🆑
fix: mobs in the same faction will no longer be at odds against one
another
fix: mobs can now perform behaviors alongside searching for targets
fix: mobs will no longer be starting and stopping when chasing targets
/🆑

code/datums/ai/basic_mobs/basic_ai_behaviors/targeting.dm

@@ -7,6 +7,7 @@ GLOBAL_LIST_INIT(target_interested_atoms, typecacheof(list(/mob, /obj/machinery/
 
 /datum/ai_behavior/find_potential_targets
 	action_cooldown = 2 SECONDS
+	behavior_flags = AI_BEHAVIOR_CAN_PLAN_DURING_EXECUTION
 	/// How far can we see stuff?
 	var/vision_range = 9
 	/// Blackboard key for aggro range, uses vision range if not specified
@@ -34,7 +35,7 @@ GLOBAL_LIST_INIT(target_interested_atoms, typecacheof(list(/mob, /obj/machinery/
 
 	// If we're using a field rn, just don't do anything yeah?
 	if(controller.blackboard[BB_FIND_TARGETS_FIELD(type)])
-		return
+		return AI_BEHAVIOR_DELAY | AI_BEHAVIOR_FAILED
 
 	var/list/potential_targets = hearers(aggro_range, get_turf(controller.pawn)) - living_mob //Remove self, so we don't suicide