[jdk21u-dev] RFR: 8345767: javax/swing/JSplitPane/4164779/JSplitPaneKeyboardNavigationTest.java fails in ubuntu22.04

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle

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Commit messages:
 - Backport 8de0622c3a5c9e01e79659ef0b43b1b01dfa5cf6

Changes: https://git.openjdk.org/jdk21u-dev/pull/1881/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1881&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8345767
  Stats: 25 lines in 1 file changed: 15 ins; 2 del; 8 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1881.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1881/head:pull/1881

PR: https://git.openjdk.org/jdk21u-dev/pull/1881