RFR: 8328279: Convert java/awt/Cursor/CursorOverlappedPanelsTest test to main

[Alexander Zuev]

Converted to a main manual test.

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Commit messages:
 - Correct the run clause of the test
 - Added a line to separate two methods
 - 8328279: Convert java/awt/Cursor/CursorOverlappedPanelsTest test to main

Changes: https://git.openjdk.org/jdk/pull/18331/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18331&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328279
  Stats: 349 lines in 3 files changed: 91 ins; 258 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18331.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18331/head:pull/18331

PR: https://git.openjdk.org/jdk/pull/18331