tgui: Fixes assets, CDN support (#52321)

* tgui: Better asset code, CDN support

* Rebuild tgui

* µ-fix

code/modules/asset_cache/asset_list.dm

@@ -45,7 +45,7 @@ GLOBAL_LIST_EMPTY(asset_datums)
 		if (!ACI)
 			continue
 		.[asset_name] = ACI.url
-	
+
 
 // For registering or sending multiple others at once
 /datum/asset/group
@@ -86,7 +86,9 @@ GLOBAL_LIST_EMPTY(asset_datums)
 	if (!name)
 		CRASH("spritesheet [type] cannot register without a name")
 	ensure_stripped()
-
+	for(var/size_id in sizes)
+		var/size = sizes[size_id]
+		register_asset("[name]_[size_id].png", size[SPRSZ_STRIPPED])
 	var/res_name = "spritesheet_[name].css"
 	var/fname = "data/spritesheets/[res_name]"
 	fdel(fname)
@@ -94,10 +96,6 @@ GLOBAL_LIST_EMPTY(asset_datums)
 	register_asset(res_name, fcopy_rsc(fname))
 	fdel(fname)
 
-	for(var/size_id in sizes)
-		var/size = sizes[size_id]
-		register_asset("[name]_[size_id].png", size[SPRSZ_STRIPPED])
-
 /datum/asset/spritesheet/send(client/C)
 	if (!name)
 		return

code/modules/asset_cache/asset_list_items.dm

@@ -6,12 +6,6 @@
 		"tgui.bundle.css" = 'tgui/packages/tgui/public/tgui.bundle.css',
 	)
 
-/datum/asset/group/tgui
-	children = list(
-		/datum/asset/simple/tgui,
-		/datum/asset/simple/fontawesome
-	)
-
 /datum/asset/simple/headers
 	assets = list(
 		"alarm_green.gif" 			= 'icons/program_icons/alarm_green.gif',