[jdk21u-dev] RFR: 8249831: Test sun/security/mscapi/nonUniqueAliases/NonUniqueAliases.java is marked with @ignore

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle

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

Commit messages:
 - Backport c5ac3c4f11e777b24d597deec522c9df09750f59

Changes: https://git.openjdk.org/jdk21u-dev/pull/1746/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1746&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8249831
  Stats: 18 lines in 1 file changed: 14 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1746.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1746/head:pull/1746

PR: https://git.openjdk.org/jdk21u-dev/pull/1746