Changes all .len to length() where applicable (#25174)

* Globals work

* Double access works

* All other things

* Revert "All other things"

This reverts commit 6574442eb6.

* More changes that compile and work

* IT WORKS AAAAAA

* Changes even more .len to length()

* Apply suggestions from code review

* Update code/datums/mind.dm

* Update code/__HELPERS/sorts/InsertSort.dm

Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

* Update code/__HELPERS/sanitize_values.dm

Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

---------

Co-authored-by: FunnyMan3595 (Charlie Nolan) <funnyman@google.com>
Co-authored-by: Deniz <66401072+Oyu07@users.noreply.github.com>

code/modules/admin/verbs/modifyvariables.dm

@@ -282,9 +282,9 @@ GLOBAL_PROTECT(VVmaint_only)
 	if(!ispath(type))
 		return
 	var/list/subtypes = subtypesof(type)
-	if(!subtypes || !subtypes.len)
+	if(!subtypes || !length(subtypes))
 		return FALSE
-	if(subtypes && subtypes.len)
+	if(subtypes && length(subtypes))
 		switch(alert("Strict object type detection?", "Type detection", "Strictly this type","This type and subtypes", "Cancel"))
 			if("Strictly this type")
 				return FALSE
@@ -374,7 +374,7 @@ GLOBAL_PROTECT(VVmaint_only)
 		to_chat(src, "Not a List.")
 		return
 
-	if(L.len > 1000)
+	if(length(L) > 1000)
 		var/confirm = alert(src, "The list you're trying to edit is very long, continuing may crash the server.", "Warning", "Continue", "Abort")
 		if(confirm != "Continue")
 			return
@@ -382,7 +382,7 @@ GLOBAL_PROTECT(VVmaint_only)
 
 
 	var/list/names = list()
-	for(var/i in 1 to L.len)
+	for(var/i in 1 to length(L))
 		var/key = L[i]
 		var/value
 		if(IS_NORMAL_LIST(L) && !isnum(key))