feat(admin): Added Simplified Chinese support (#5798)

* feat(admin): Added Simplified Chinese support

* feat(admin): Update zh translation.json

* docs: Add Simplified Chinese to Admin language support list

* Revert "docs: Add Simplified Chinese to Admin language support list"

This reverts commit 51cca40211ac7e01ac7f78429107ace44785878a.

packages/admin-ui/ui/src/i18n/index.ts

@@ -69,6 +69,10 @@ export const supportedLanguages = [
   { 
     locale: "ko",
     name: "한국어"
+  },
+  {
+    locale: "zh",
+    name: "简体中文",
   }
 ].sort((a, b) => a.locale.localeCompare(b.locale))