fix(quota): 配额表单整体替换，留空即不限、0 即不给、负数和越界拒收，超配额的服务器仍可调小

panel/src/i18n/resources/en-US/errors.json

@@ -74,6 +74,7 @@
   "account_retired": "This account has been retired — sign in with the account it was migrated to.",
   "no_migration": "There is no migration in progress.",
   "not_confirmed": "Confirm it's you in this browser first. A confirmation lasts 10 minutes.",
+  "invalid_quota": "A quota must be a whole number from 0 to 2147483647. Leave it empty for unlimited.",
   "already_confirmed": "This migration has already been confirmed.",
   "invalid_target": "The migration target must be a different account.",
   "target_not_found": "No account matches that migration target.",