ClientSecretAuthenticationProvider inside this logic is really confusing,This makes sense(query-->validate-->modify again without making any changes)??

[zxuanhong]

Describe the bug

1. ClientSecretAuthenticationProvider inside this logic is really confusing
2. You simply validate the client, and then update the client table when the validation is successful
3. ‘RegisteredClient registeredClient = this.registeredClientRepository.findByClientId(clientId)’There is no operation modification in the later code, so it is necessary to update later

4. Through the client id query, in the verification, no problem data does not make any changes to modify again？？？？

[jgrandja]

@zxuanhong Questions are better suited to Stack Overflow. We prefer to use GitHub issues only for bugs and enhancements.

Please see gh-1099 for more details.

[Waylon-Firework]

#1337