RFR: 8359889: java/awt/MenuItem/SetLabelTest.java inadvertently triggers clicks on items pinned to the taskbar

[Manukumar V S]

Issue:
In Windows, java/awt/MenuItem/SetLabelTest.java inadvertently triggers clicks on items pinned to the taskbar. This may open some other UI item and may interfere further testing on that machine.

Fix:
Move the test UI to the centre of the screen by calling frame.setLocationRelativeTo(null).

Testing:
Tested manually and using Mach5(20 times in 3 machines) and got all PASS and never triggered unwanted clicks on taskbar.

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Commit messages:
 - 8359889: java/awt/MenuItem/SetLabelTest.java inadvertently triggers clicks on items pinned to the taskbar

Changes: https://git.openjdk.org/jdk/pull/25868/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25868&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8359889
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25868.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25868/head:pull/25868

PR: https://git.openjdk.org/jdk/pull/25868