[jdk21u-dev] RFR: 8341170: Open source several Choice related tests (part 2)

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

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Commit messages:
 - Backport 52eded4a9ce612a978ae15d5b606784bcf671c69

Changes: https://git.openjdk.org/jdk21u-dev/pull/1447/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1447&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341170
  Stats: 635 lines in 5 files changed: 635 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1447.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1447/head:pull/1447

PR: https://git.openjdk.org/jdk21u-dev/pull/1447