Enhance log desensitization

[JmPotato]

Ref #2852 and https://github.com/pingcap/tidb/issues/51306.

To better provide log desensitization functionality, we need to introduce the following enhancements and improvements for PD:

• [x] Complete the unprocessed sensitive information logs.
• [ ] Provide sensitive data mark with ‹..› like tidb_redact_log.
  • [ ] #8306