[jdk21u-dev] RFR: 8340687: Open source closed frame tests #1

[Goetz Lindenmaier]

I backport this for parity with 21.0.7-oracle

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Commit messages:
 - Backport 47fcf5a3b0796ffeb6407be961ceb552ca2a40f8

Changes: https://git.openjdk.org/jdk21u-dev/pull/1323/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1323&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340687
  Stats: 458 lines in 4 files changed: 458 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1323.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1323/head:pull/1323

PR: https://git.openjdk.org/jdk21u-dev/pull/1323