Chair rotation fix (#29018)

* Makes pushing mobs not revert direction changes from other sources if they happen at the same time

* Update chairs.dm

* remove signal handler

code/game/objects/structures/stool_bed_chair_nest/chairs.dm

@@ -22,7 +22,11 @@
 	/// Used to handle rotation properly, should only be 1, 4, or 8
 	var/possible_dirs = 4
 	/// Will it set to the layer above the player or not? Use with Armrests.
-	var/uses_armrest = FALSE 
+	var/uses_armrest = FALSE
+
+/obj/structure/chair/setDir(newdir)
+	. = ..()
+	handle_rotation()
 
 /obj/structure/chair/examine(mob/user)
 	. = ..()
@@ -34,10 +38,6 @@
 		W.setDir(dir)
 		qdel(src)
 
-/obj/structure/chair/Move(atom/newloc, direct = 0, glide_size_override = 0, update_dir = TRUE)
-	. = ..()
-	handle_rotation()
-
 /obj/structure/chair/attackby__legacy__attackchain(obj/item/W as obj, mob/user as mob, params)
 	if(istype(W, /obj/item/assembly/shock_kit))
 		var/obj/item/assembly/shock_kit/SK = W
@@ -102,12 +102,12 @@
 	else
 		rotate()
 
-/obj/structure/chair/proc/handle_rotation(direction)
+/obj/structure/chair/proc/handle_rotation()
 	handle_layer()
 	if(has_buckled_mobs())
 		for(var/m in buckled_mobs)
 			var/mob/living/buckled_mob = m
-			buckled_mob.setDir(direction)
+			buckled_mob.setDir(dir)
 
 /obj/structure/chair/proc/handle_layer()
 	if(possible_dirs == 8) // We don't want chairs with corner dirs to sit over mobs, it is handled by armrests
@@ -126,10 +126,6 @@
 	. = ..()
 	handle_layer()
 
-/obj/structure/chair/setDir(newdir)
-	..()
-	handle_rotation(newdir)
-
 /obj/structure/chair/AltClick(mob/user)
 	if(user.stat || HAS_TRAIT(user, TRAIT_HANDS_BLOCKED) || !Adjacent(user) || is_ventcrawling(user))
 		return
@@ -144,7 +140,6 @@
 
 /obj/structure/chair/proc/rotate()
 	setDir(turn(dir, (360 / possible_dirs)))
-	handle_rotation()
 
 // Chair types
 /obj/structure/chair/light