RFR: 8158801: [TEST_BUG] Mixing tests fail because of focus workaround trick [v9]

[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 incrementally with four additional commits since the last revision:

 - Revert "Changes Frame width to 300, uses protected constants for all base tests frame sizes"
   
   This reverts commit b6558c79a129837c3d8d92cdc99d9417e630126d.
 - Revert "Removes passed tests from problem list"
   
   This reverts commit 2f9be981c785ba40574fc5710c0330fb3abc60d2.
 - Revert "Problem list files for Mac OS only"
   
   This reverts commit f68973cc2e4b68a18b7c6ec04aebd75bf0c1899a.
 - Revert "Changes protected fields to static"
   
   This reverts commit fa864b2fb7f68c2b33726482c78425e63bf8a396.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25971/files
  - new: https://git.openjdk.org/jdk/pull/25971/files/655487d0..f041ed29

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=08
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=07-08

  Stats: 42 lines in 7 files changed: 30 ins; 3 del; 9 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