RFR: 8346828: javax/swing/JScrollBar/4865918/bug4865918.java still fails in CI [v3]

[Prasanta Sadhukhan]

> Test seems to still fail in CI in ubuntu22.04 intermittently even after [JDK-8346324](https://bugs.openjdk.org/browse/JDK-8346324). Made the test headless similar to javax/swing/JScrollBar/bug4842792.java.

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  mac limitation

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22937/files
  - new: https://git.openjdk.org/jdk/pull/22937/files/6804cfd5..40dd4da2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22937&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22937&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22937.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22937/head:pull/22937

PR: https://git.openjdk.org/jdk/pull/22937