RFR: 8353007: Open some JComboBox bugs 2 [v4]

[Alisen Chung]

> Updating and opening some tests

Alisen Chung has updated the pull request incrementally with two additional commits since the last revision:

 - update to PassFailJFrame.forceFail
 - update to PassFailJFrame.forceFail

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24496/files
  - new: https://git.openjdk.org/jdk/pull/24496/files/24f40ddf..d7bba188

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24496&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24496&range=02-03

  Stats: 5 lines in 1 file changed: 0 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/24496.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24496/head:pull/24496

PR: https://git.openjdk.org/jdk/pull/24496