RFR: 8273618: DisplayChangeVITest.java is timing out on macOS 12 aarch64

[Prasanta Sadhukhan]

java/awt/FullScreen/DisplayChangeVITest/DisplayChangeVITest.java is timing out on a macOS 12 aarch64 (an Apple Silicon Mac Mini) system due to getting locked on frame.dispose() even though test passed.
Modified test to use JFrame in EDT and revert the frame back to windowed mode before dispose frame in finally block.

Modified test pass in CI system for several iterations in all platforms (including macos x64 and aarch64)

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Commit messages:
 - 8273618: DisplayChangeVITest.java is timing out on macOS 12 aarch64
 - 8273618: DisplayChangeVITest.java is timing out on macOS 12 aarch64

Changes: https://git.openjdk.java.net/jdk/pull/5653/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5653&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273618
  Stats: 48 lines in 2 files changed: 17 ins; 2 del; 29 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5653.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5653/head:pull/5653

PR: https://git.openjdk.java.net/jdk/pull/5653