RFR: 8354285: Open source Swing tests Batch 3

[Jayathirth D V]

Open source some of the swing LAF tests

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Commit messages:
 - 8354285: Open source Swing tests Batch 3

Changes: https://git.openjdk.org/jdk/pull/24677/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24677&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354285
  Stats: 257 lines in 3 files changed: 257 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24677.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24677/head:pull/24677

PR: https://git.openjdk.org/jdk/pull/24677