[jdk21u-dev] RFR: 8354554: Open source several clipboard tests batch1

[Goetz Lindenmaier]

I backport this test change as it also goes to 21.0.9-oracle,

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Commit messages:
 - Backport 4873eec06f25227fe221a86b07c6072e676f7d5d

Changes: https://git.openjdk.org/jdk21u-dev/pull/1819/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1819&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354554
  Stats: 637 lines in 5 files changed: 637 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1819.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1819/head:pull/1819

PR: https://git.openjdk.org/jdk21u-dev/pull/1819