[jdk21u] Integrated: 8294156: Allow PassFailJFrame.Builder to create test UI

[Alexey Ivanov]

Backporting an enhancement that allows creating the test UI in a functional style when using `PassFailJFrame` which is a manual test framework.

Clean backport. Low risk.

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Commit messages:
 - Backport 42b9ac8a07b540f4d7955a778923d24a876451cc

Changes: https://git.openjdk.org/jdk21u/pull/385/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=385&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294156
  Stats: 442 lines in 1 file changed: 365 ins; 38 del; 39 mod
  Patch: https://git.openjdk.org/jdk21u/pull/385.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/385/head:pull/385

PR: https://git.openjdk.org/jdk21u/pull/385