RFR: 8158801: [TEST_BUG] Mixing tests fail because of focus workaround trick [v30]

[Khalid Boulanouare]

> Many Mixing tests failed because the work around click lands on the minimizing area in the window control and causes the tests to fail.
> 
> This fix changes the width of base frames which allows most of tests to pass.

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 46 additional commits since the last revision:

 - Merge branch 'openjdk:master' into jdk-8158801
 - Disposes frame at the end of testing.
 - Moves latch logic inside ancestor frame block
 - Merge branch 'openjdk:master' into jdk-8158801
 - Disposes frames after each AWT component test
 - Removes redundant code for centring frames
 - Merge branch 'openjdk:master' into jdk-8158801
 - Merge branch 'openjdk:master' into jdk-8158801
 - Centers missed frames in the middle of screen
 - Uses KeyboardFocusManager instead of FocusManager
 - ... and 36 more: https://git.openjdk.org/jdk/compare/ee7a9870...a62416a9

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25971/files
  - new: https://git.openjdk.org/jdk/pull/25971/files/bbeda980..a62416a9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=29
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=28-29

  Stats: 5843 lines in 607 files changed: 2964 ins; 1209 del; 1670 mod
  Patch: https://git.openjdk.org/jdk/pull/25971.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25971/head:pull/25971

PR: https://git.openjdk.org/jdk/pull/25971