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/datums/progressbar.dm

@@ -26,7 +26,7 @@
 	LAZYINITLIST(user.progressbars[bar.loc])
 	var/list/bars = user.progressbars[bar.loc]
 	bars.Add(src)
-	listindex = bars.len
+	listindex = length(bars)
 	animate(bar, pixel_y = 32 + (PROGRESSBAR_HEIGHT * (listindex - 1)), alpha = 255, time = 5, easing = SINE_EASING)
 
 /datum/progressbar/proc/update(progress)
@@ -58,7 +58,7 @@
 
 	var/list/bars = user.progressbars[bar.loc]
 	bars.Remove(src)
-	if(!bars.len)
+	if(!length(bars))
 		LAZYREMOVE(user.progressbars, bar.loc)
 	animate(bar, alpha = 0, time = 5)
 	spawn(5)