[jdk21u-dev] RFR: 8339639: Opensource few AWT PopupMenu tests

[Goetz Lindenmaier]

I backport this for parity with 21.0.8-oracle

Resolved ProblemList, probably clean.

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Commit messages:
 - Backport a0794e0a054c5e7ed051efa6362726cdd7598255

Changes: https://git.openjdk.org/jdk21u-dev/pull/1560/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1560&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339639
  Stats: 360 lines in 3 files changed: 360 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1560.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1560/head:pull/1560

PR: https://git.openjdk.org/jdk21u-dev/pull/1560