update zh.json: update 223 translations (#1162)

Translation update summary:
- New translations: 0
- Updated translations: 223
- Total changes: 223

Key updated translations:
- setting.file.option-new-attachment-location-default: attachments -> 附件
- setting.account.label-insider: Insider -> 内测用户
- ... and 221 more

All translations have been reviewed and verified.

Author: ttiee