[jdk21u-dev] RFR: 8327180: Failed: java/io/ObjectStreamClass/ObjectStreamClassCaching.java#G1

[Goetz Lindenmaier]

I backport this for parity with 21.0.4-oracle.

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Commit messages:
 - Backport 85fc47c81af81a595dc88e61454d8ba2d860f301

Changes: https://git.openjdk.org/jdk21u-dev/pull/512/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=512&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327180
  Stats: 36 lines in 1 file changed: 4 ins; 28 del; 4 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/512.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/512/head:pull/512

PR: https://git.openjdk.org/jdk21u-dev/pull/512