RFR: 8158801: [TEST_BUG] Mixing tests fail because of focus workaround trick [v8]

[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 refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  Merge branch 'openjdk:master' into jdk-8158801

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25971/files
  - new: https://git.openjdk.org/jdk/pull/25971/files/0b53b89e..655487d0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25971&range=06-07

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 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