RFR: 8354219 : Automate javax/swing/JComboBox/ComboPopupBug.java

[Anass Baya]

javax/swing/JComboBox/ComboPopupBug.java test automation

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Commit messages:
 - Test automation

Changes: https://git.openjdk.org/jdk/pull/24624/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24624&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354219
  Stats: 64 lines in 1 file changed: 21 ins; 15 del; 28 mod
  Patch: https://git.openjdk.org/jdk/pull/24624.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24624/head:pull/24624

PR: https://git.openjdk.org/jdk/pull/24624