Conversion of realname and nickname from bay (#19120)

* Automatic changelog compile [ci skip]

* replace all bay instances for realname and nickname with tg

* add comments where uncertain of sanitisation needed

* Fix issue from git conflict..

* Fix issue causing setup menu not opening

* Attempt to clean up how name datums are handled

* Remove redundant check

* Fix number issues with character names

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Co-authored-by: vorestation-ci[bot] <199609141+vorestation-ci[bot]@users.noreply.github.com>

code/modules/client/preference_setup/loadout/02_loadout.dm

@@ -80,7 +80,7 @@ var/list/gear_datums = list()
 	if(pref.client)
 		if(G.ckeywhitelist && !(pref.client_ckey in G.ckeywhitelist))
 			return FALSE
-		if(G.character_name && !(pref.real_name in G.character_name))
+		if(G.character_name && !(pref.read_preference(/datum/preference/name/real_name) in G.character_name))
 			return FALSE
 	return TRUE