Add Simplified Chinese as a system language

The installer asks for the language before the keyboard, and
Setup > Language (omarchy language en|zh) switches it later. Under
zh_CN the menu reads its labels from omarchy-menu.zh-cn.jsonc, the
shell from I18nZh.js through I18n.tr, and notifications are worded
by their sender through omarchy-text, which reads the same table.
User text is never translated.

bin/omarchy-hyprland-workspace-layout-default

@@ -32,4 +32,4 @@ printf 'o.workspace_mode({ default = "%s" })\n' "$1" >"$DEFAULT_FILE"
 
 hyprctl reload >/dev/null
 omarchy-shell -q omarchy.workspaces refresh
-omarchy-notification-send -g 󱂬 "New workspaces use the $LABEL layout"
+omarchy-notification-send -g 󱂬 "$(omarchy-text "New workspaces use the %1 layout" "$LABEL")"