Why Roles do not support concurrent authorization？

version：2.10
I used multiple admin clients to concurrently grant multiple topic permissions to a role, but threw concurrent modification exceptions；

I think this should add support for concurrent authorization；

Exception Info：
java.util.concurrent.CompletionException: com.sf.mw.exceptions.InternalException: 角色:[j4hcvds:testSubRole:SUB]授予主题[duxgTenant/duxgNameSpace/duxgTopicToPro22-j4hcvds:testSubRole:SUB-RETRY] [pub]权限失败...org.apache.pulsar.client.admin.PulsarAdminException$ConflictException: Concurrent modification

No source files or tests are named. Start by reproducing the version 2.10 scenario with multiple admin clients concurrently granting topic permissions to one role, then trace the role authorization update path from the admin API. Done means concurrent grants have defined behavior and no longer fail with a Concurrent modification ConflictException.

Written by the indexing model from the issue text.