fix(orgs): 更新用户时`org_roles`参数为`None`时不更新组织角色

apps/users/api/user.py

@@ -55,11 +55,13 @@ class UserViewSet(CommonApiMixin, UserQuerysetMixin, BulkModelViewSet):
             post_user_create.send(self.__class__, user=user)
 
     @staticmethod
-    def set_users_to_org(users, org_roles):
+    def set_users_to_org(users, org_roles, update=False):
         # 只有真实存在的组织才真正关联用户
         if not current_org or not current_org.is_real():
             return
         for user, roles in zip(users, org_roles):
+            if update and roles is None:
+                continue
             if not roles:
                 # 当前组织创建的用户，至少是该组织的`User`
                 roles = [ORG_ROLE.USER]
@@ -107,7 +109,7 @@ class UserViewSet(CommonApiMixin, UserQuerysetMixin, BulkModelViewSet):
         users = serializer.save()
         if isinstance(users, User):
             users = [users]
-        self.set_users_to_org(users, org_roles)
+        self.set_users_to_org(users, org_roles, update=True)
 
     def perform_bulk_update(self, serializer):
         # TODO: 需要测试