RFR: 8158801: [TEST_BUG] Mixing tests fail because of focus workaround trick [v19]

[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 28 additional commits since the last revision:

 - Merge branch 'openjdk:master' into jdk-8158801
 - Updates CountDownLatch waiting time to one second
 - Requests focus, if component does not have it already.
 - Merge branch 'openjdk:master' into jdk-8158801
 - Checks if component had focus first.
 - Removes wildcard imports
 - Merge branch 'openjdk:master' into jdk-8158801
 - Removes not needed component frace ancestor.
 - Problem unlists passed tests
 - Uses frame requestFocus instead of robot clicks for focus
 - ... and 18 more: https://git.openjdk.org/jdk/compare/2d31b3e0...3f8742e7

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25971/files
  - new: https://git.openjdk.org/jdk/pull/25971/files/abc0797c..3f8742e7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=18
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=17-18

  Stats: 15747 lines in 461 files changed: 8450 ins; 5395 del; 1902 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