RFR: 8345057: ML_KEM NamedParameterSpec constants removed by ML-DSA integration

[Valerie Peng]

Could someone please help review this trivial fix?

The constants for ML-KEM are accidentally removed during merge. This PR adds them back and adds a test for checking them against the expected ones.

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Commit messages:
 - 8345057: ML_KEM NamedParameterSpec constants removed by ML-DSA integration

Changes: https://git.openjdk.org/jdk/pull/22397/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22397&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345057
  Stats: 93 lines in 2 files changed: 93 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22397.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22397/head:pull/22397

PR: https://git.openjdk.org/jdk/pull/22397