Signal Handler Preperation (#17681)

* FIrst pass

* signal handler only on base proc

* missing signal_handlers

* windoor to timers

* Testing a really dumb fix

code/unit_tests/clothing_tests.dm

@@ -149,7 +149,6 @@
 	return failed
 
 /datum/unit_test/all_clothing_shall_be_valid/get_signal_data(atom/source, list/data = list())
-	SIGNAL_HANDLER
 	switch(data[1])
 		if("set_slot")
 			var/slot_name 	= data[2]

code/unit_tests/reagent_tests.dm

@@ -280,7 +280,6 @@
 	return TRUE
 
 /datum/unit_test/chemical_reactions_shall_not_conflict/get_signal_data(atom/source, list/data = list())
-	SIGNAL_HANDLER
 	result_reactions.Add(data[1]) // Append the reactions that happened, then use that to check their inhibitors
 
 

code/unit_tests/unit_test.dm

@@ -111,3 +111,4 @@ var/total_unit_tests = 0
 // This signal should never be possible to call if the game is not compiled for unit tests
 /datum/unit_test/proc/get_signal_data(atom/source, list/data = list())
 	SIGNAL_HANDLER
+	return