RFR: 8260633: [macos] java/awt/dnd/MouseEventAfterStartDragTest/MouseEventAfterStartDragTest.html test failed [v2]

[Alisen Chung]

> Opening closed dnd test
> Test is green on all platforms

Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:

  button1_down_mask, dispose on edt, replace system err with out, frame srcpoint and dimension access on edt

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Changes:
  - all: https://git.openjdk.org/jdk/pull/19128/files
  - new: https://git.openjdk.org/jdk/pull/19128/files/8d63997e..fb1d2e9b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19128&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19128&range=00-01

  Stats: 24 lines in 1 file changed: 8 ins; 0 del; 16 mod
  Patch: https://git.openjdk.org/jdk/pull/19128.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19128/head:pull/19128

PR: https://git.openjdk.org/jdk/pull/19128