RFR: 8338282: javax/swing/JMenuBar/TestMenuMnemonicLinuxAndMac.java test failed on macOS and Ubuntu [v2]

[Abhishek Kumar]

> Test is failing on intermittently on macOS and ubuntu machine in CI testing.
> Test stabilization done by requesting focus for the frame before starting the testing. 
> 
> Ran the test before and after the fix and there is no failure after test stabilization for multiple run.
> CI link is added in JBS.

Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:

  copyright year update

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/26307/files
  - new: https://git.openjdk.org/jdk/pull/26307/files/d8f6ecc0..53333895

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26307&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26307&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26307.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26307/head:pull/26307

PR: https://git.openjdk.org/jdk/pull/26307