RFR: 8352149: Test java/awt/Frame/MultiScreenTest.java fails: Window list is empty [v12]

[Khalid Boulanouare]

> Fixes issue in which the test fails when run on multi-screen machine.
> 
> Tested on Ubuntu 24.04, MacOS 15 and Windows 11
> 
> JTREG
> 
> runner starting test: java/awt/Frame/MultiScreenTest.java
> runner finished test: java/awt/Frame/MultiScreenTest.java
> Passed. Execution successful

Khalid Boulanouare has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 11 additional commits since the last revision:

 - Removes extra blank line
 - Merge branch 'openjdk:master' into jdk-8352149
 - Adds extra blank lines
 - Nests classes inside test class
 - Cleans up code
 - Merge branch 'openjdk:master' into jdk-8352149
 - Removes unnecessary lines and keep consistent code format
 - Merge branch 'openjdk:master' into jdk-8352149
 - Adds Override for overriden methods
 - Merge branch 'openjdk:master' into jdk-8352149
 - ... and 1 more: https://git.openjdk.org/jdk/compare/3e7a4429...44a839b2

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24752/files
  - new: https://git.openjdk.org/jdk/pull/24752/files/2b5c89a2..44a839b2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24752&range=11
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24752&range=10-11

  Stats: 7684 lines in 227 files changed: 6277 ins; 940 del; 467 mod
  Patch: https://git.openjdk.org/jdk/pull/24752.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24752/head:pull/24752

PR: https://git.openjdk.org/jdk/pull/24752