[jdk21u-dev] RFR: 8311644: Server should not send bad_certificate alert when the client does not send any certificates

[Amos Shi]

Backport of [JDK-8311644](https://bugs.openjdk.org/browse/JDK-8311644)

Testing
- Local: Test passed on `MacOS 14.6.1` on Apple M1 Max
  - `CertMsgCheck.java`: Test results: passed: 1
  - `CheckSessionContext.java`: Test results: passed: 1
  - `LegacyDHEKeyExchange.java`: Test results: passed: 1
  - `SigAlgosExtTestWithTLS12.java`: Test results: passed: 1
  - `SigAlgosExtTestWithTLS13.java`: Test results: passed: 1
- Pipeline: 
- Testing Machine:

-------------

Commit messages:
 - Backport f62b5789add23adda2634a1cfb80f48b4387be74

Changes: https://git.openjdk.org/jdk21u-dev/pull/932/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=932&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311644
  Stats: 270 lines in 8 files changed: 191 ins; 24 del; 55 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/932.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/932/head:pull/932

PR: https://git.openjdk.org/jdk21u-dev/pull/932