RFR: 8341972: java/awt/dnd/DnDRemoveFocusOwnerCrashTest.java timed out after JDK-8341257 [v2]

[Damon Nguyen]

> Intermittent failure of awt test in windows only. When re-testing locally, the drag button wasn't actually drawn in the test. I made p static, added stability delays, and moved robot out of the EDT (as well as caught a duplicate robot instantiation). There's a merging issue that also missed adding this test to the problem list for MacOS, so it's been added here. Tested with 100 repeats on all platforms (but problem listed on MacOS) and the test now passes consistently.

Damon Nguyen has updated the pull request incrementally with one additional commit since the last revision:

  Add delay before getting location. Put whole disposal into EDT

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21477/files
  - new: https://git.openjdk.org/jdk/pull/21477/files/11c5bdfb..7290323a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21477&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21477&range=00-01

  Stats: 11 lines in 1 file changed: 8 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/21477.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21477/head:pull/21477

PR: https://git.openjdk.org/jdk/pull/21477