Fixes rifle scopes working despite not having the gun in hand (#59403)

Gun scopes no longer work unless you are holding them in hand (they persist even if you switch your active hand though, useful for reloading)

code/modules/projectiles/gun.dm

@@ -590,7 +590,7 @@
 	if(azoom)
 		azoom.Remove(user)
 	if(zoomed)
-		zoom(user, user.dir)
+		zoom(user, user.dir, FALSE)
 
 /obj/item/gun/update_overlays()
 	. = ..()
@@ -676,10 +676,15 @@
 	var/obj/item/gun/gun = null
 
 /datum/action/toggle_scope_zoom/Trigger()
+	. = ..()
+	if(!.)
+		return
 	gun.zoom(owner, owner.dir)
 
 /datum/action/toggle_scope_zoom/IsAvailable()
 	. = ..()
+	if(owner.get_active_held_item() != gun)
+		. = FALSE
 	if(!. && gun)
 		gun.zoom(owner, owner.dir, FALSE)