[jdk21u-dev] RFR: 8321474: TestAutoCreateSharedArchiveUpgrade.java should be updated with JDK 21

[Goetz Lindenmaier]

I backport this for parity with 21.0.6-oracle.

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Commit messages:
 - Backport 1b621f5527a0d7ae345d79f293357446ab7876d9

Changes: https://git.openjdk.org/jdk21u-dev/pull/981/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=981&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8321474
  Stats: 9 lines in 1 file changed: 7 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/981.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/981/head:pull/981

PR: https://git.openjdk.org/jdk21u-dev/pull/981