RFR: JDK-8314246: javax/swing/JToolBar/4529206/bug4529206.java fails intermittently on Linux

Wed Aug 16 18:30:32 UTC 2023

JToolBar test - bug4529206.java was failing intermittently on Linux. It was due to timing issue. Added appropriate delay to fix the issue.

CI Testing passes on all platforms.

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Commit messages:
 - copyright year
 - initial commit

Changes: https://git.openjdk.org/jdk/pull/15316/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15316&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314246
  Stats: 40 lines in 1 file changed: 8 ins; 21 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/15316.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15316/head:pull/15316

PR: https://git.openjdk.org/jdk/pull/15316