Makes switching loadout tabs not refresh preview, fixes new character loading. (#16167)

Co-authored-by: Matt Atlas <liermattia@gmail.com>

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

@@ -356,7 +356,7 @@ var/list/gear_datums = list()
 
 	else if(href_list["select_category"])
 		current_tab = href_list["select_category"]
-		return TOPIC_REFRESH_UPDATE_PREVIEW
+		return TOPIC_REFRESH
 	else if(href_list["clear_loadout"])
 		pref.gear.Cut()
 		return TOPIC_REFRESH_UPDATE_PREVIEW

code/modules/client/preferences.dm

@@ -324,6 +324,7 @@ datum/preferences
 	else if(href_list["new_character_sql"])
 		new_setup(1)
 		to_chat(usr, "<span class='notice'>Your setup has been refreshed.</span>")
+		usr.client.prefs.update_preview_icon()
 		close_load_dialog(usr)
 	else if(href_list["close_load_dialog"])
 		close_load_dialog(usr)