fix: 修复用户删除后，用相同的oauth授权登录报错用户不存在的问题

https://github.com/certd/certd/issues/603

packages/ui/certd-server/src/modules/login/service/login-service.ts

@@ -242,7 +242,9 @@ export class LoginService {
     }
     const info = await this.userService.findOne({id: oauthBound.userId});
     if (info == null) {
-      throw new CommonException('用户不存在');
+      // 用户已被删除，删除此oauth绑定
+      await this.oauthBoundService.delete([oauthBound.id]);
+      return null
     }
     return this.generateToken(info);
   }