RFR: 8315882: Open some swing tests 2

[Alisen Chung]

Opening some swing tests

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Commit messages:
 - changed tests
 - init commit

Changes: https://git.openjdk.org/jdk/pull/15628/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15628&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315882
  Stats: 207 lines in 3 files changed: 207 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15628.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15628/head:pull/15628

PR: https://git.openjdk.org/jdk/pull/15628