RFR: 8339233: Test javax/swing/JButton/SwingButtonResizeTestWithOpenGL.java#id failed: Button renderings are different after window resize [v5]

[Manukumar V S]

> This is a highly intermittent failure, and it failed only once in CI on a particular windows machine and passed on all other runs. 
> 
> Failure reason:
> When the button was displayed for the first time, the focus rectangle drawn on the button text(Button A) was not seen(failure images attached in the bug).
> 
> Fix:
> To stabilize the test, I have added a line -> button.setFocusPainted(false), so that the focus rectangle will not be painted

Manukumar V S has updated the pull request incrementally with one additional commit since the last revision:

  Added null check to frame before disposing

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20777/files
  - new: https://git.openjdk.org/jdk/pull/20777/files/353b304f..2684224f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20777&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20777&range=03-04

  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/20777.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20777/head:pull/20777

PR: https://git.openjdk.org/jdk/pull/20777