RFR: 8345767: javax/swing/JSplitPane/4164779/JSplitPaneKeyboardNavigationTest.java fails in ubuntu22.04 [v2]

[Prasanta Sadhukhan]

> javax/swing/JSplitPane/4164779/JSplitPaneKeyboardNavigationTest.java fails in ubuntu22.04 citing
> 
> 
> Verifier 1 failed, rightButton2 is not focus owner,F6 doesn't transfer focus to the right/bottom side of the splitpane
> Verifier 2 passed
> Verifier 3 passed
> Verifier 4 passed
> ----------System.err:(11/842)----------
> java.lang.RuntimeException: Test failed, verifiers 1, failed for com.sun.java.swing.plaf.motif.MotifLookAndFeel 
> 
> 
> seems like focus is not transferred in time but is very intermittent...Added stability fixes with waitForIdle, delay and test passed in several OCI systems without issue

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

  Review

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22631/files
  - new: https://git.openjdk.org/jdk/pull/22631/files/c96cdc8d..0b3de433

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22631&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22631&range=00-01

  Stats: 10 lines in 1 file changed: 4 ins; 1 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/22631.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22631/head:pull/22631

PR: https://git.openjdk.org/jdk/pull/22631