[jdk11u-dev] RFR: 8260633: [macos] java/awt/dnd/MouseEventAfterStartDragTest/MouseEventAfterStartDragTest.html test failed

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport 6f7ddbec7d0bc459d44b6518fe1d982eaba7f37b

Changes: https://git.openjdk.org/jdk11u-dev/pull/2820/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2820&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8260633
  Stats: 214 lines in 1 file changed: 214 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2820.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2820/head:pull/2820

PR: https://git.openjdk.org/jdk11u-dev/pull/2820