Bools and returns super-pr (#53221)

Replaces like 70-80% of 0 and such, as a side effect cleaned up a bunch of returns
Edit: Most left out ones are in mecha which should be done in mecha refactor already
Oh my look how clean it is

Co-authored-by: TiviPlus <TiviPlus>
Co-authored-by: Couls <coul422@gmail.com>

code/datums/elements/_element.dm

@@ -18,7 +18,7 @@
 
 /// Activates the functionality defined by the element on the given target datum
 /datum/element/proc/Attach(datum/target)
-	SHOULD_CALL_PARENT(1)
+	SHOULD_CALL_PARENT(TRUE)
 	if(type == /datum/element)
 		return ELEMENT_INCOMPATIBLE
 	SEND_SIGNAL(target, COMSIG_ELEMENT_ATTACH, src)
@@ -30,7 +30,7 @@
 	SIGNAL_HANDLER
 
 	SEND_SIGNAL(source, COMSIG_ELEMENT_DETACH, src)
-	SHOULD_CALL_PARENT(1)
+	SHOULD_CALL_PARENT(TRUE)
 	UnregisterSignal(source, COMSIG_PARENT_QDELETING)
 
 /datum/element/Destroy(force)