feat(i18n): Frontend add zh_TW Option (apache#33192)

Co-authored-by: Shao Yu-Lung (Allen) <mis@cendai.com.tw>

Author: bestlong

superset-frontend/packages/superset-ui-core/src/translation/types/index.ts

@@ -35,7 +35,8 @@ export type Locale =
   | 'pt'
   | 'pt_BR'
   | 'ru'
-  | 'zh'; // supported locales in Superset
+  | 'zh'
+  | 'zh_TW'; // supported locales in Superset
 
 /**
  * Language pack provided to `jed`.