Update Traditional Chinese to Beta (#29044)

Automatic Merge

webapp/channels/src/components/admin_console/__snapshots__/schema_admin_settings.test.tsx.snap

@@ -401,7 +401,7 @@ exports[`components/admin_console/SchemaAdminSettings should match snapshot with
                 },
                 Object {
                   "order": 20,
-                  "text": "中文 (繁體)",
+                  "text": "中文 (繁體) (Beta)",
                   "value": "zh-TW",
                 },
                 Object {
@@ -530,7 +530,7 @@ exports[`components/admin_console/SchemaAdminSettings should match snapshot with
                 },
                 Object {
                   "order": 20,
-                  "text": "中文 (繁體)",
+                  "text": "中文 (繁體) (Beta)",
                   "value": "zh-TW",
                 },
                 Object {

webapp/channels/src/i18n/i18n.jsx

@@ -154,7 +154,7 @@ const languages = {
     },
     'zh-TW': {
         value: 'zh-TW',
-        name: '中文 (繁體)',
+        name: '中文 (繁體) (Beta)',
         order: 20,
         url: zhTW,
     },