RFR: 8316324: Opensource five miscellaneous Swing tests

[Alexander Zuev]

Clean up and opensource five tests.

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Commit messages:
 - 8316324: Opensource five miscellaneous Swing tests

Changes: https://git.openjdk.org/jdk/pull/18443/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18443&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316324
  Stats: 565 lines in 6 files changed: 565 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18443.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18443/head:pull/18443

PR: https://git.openjdk.org/jdk/pull/18443