Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/halo-sigs/plugin-oauth2/blob/main/OWNERS)~~ [JohnNiang]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
What this PR does?
限制每个平台的 OAuth2 帐户一次只能连接到一个用户帐户
/kind improvement