chore: Enable Polish (pl), update translations (#2403)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/widget/i18n/locale/zh_TW.json

@@ -19,7 +19,7 @@
   },
   "START_CONVERSATION": "開始對話",
   "UNREAD_VIEW": {
-    "VIEW_MESSAGES_BUTTON": "See new messages",
+    "VIEW_MESSAGES_BUTTON": "查看新訊息",
     "CLOSE_MESSAGES_BUTTON": "關閉",
     "COMPANY_FROM": "from",
     "BOT": "機器人"
@@ -47,9 +47,14 @@
       "MESSAGE": {
         "LABEL": "訊息",
         "PLACEHOLDER": "請輸入你的訊息",
-        "ERROR": "Message too short"
+        "ERROR": "訊息過短"
       }
     }
   },
-  "FILE_SIZE_LIMIT": "File exceeds the {MAXIMUM_FILE_UPLOAD_SIZE} attachment limit"
+  "FILE_SIZE_LIMIT": "File exceeds the {MAXIMUM_FILE_UPLOAD_SIZE} attachment limit",
+  "CHAT_FORM": {
+    "INVALID": {
+      "FIELD": "Invalid field"
+    }
+  }
 }