RFR: 8353685: Open some JComboBox bugs 4

[Alisen Chung]

Updating and opening some JComboBox bugs

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Commit messages:
 - update path
 - opening tests

Changes: https://git.openjdk.org/jdk/pull/24733/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24733&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353685
  Stats: 255 lines in 3 files changed: 255 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24733.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24733/head:pull/24733

PR: https://git.openjdk.org/jdk/pull/24733