[jdk18u] RFR: 8274751: Drag And Drop hangs on Windows

[Dmitry Markov]

8274751: Drag And Drop hangs on Windows

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Commit messages:
 - 8274751: Drag And Drop hangs on Windows

Changes: https://git.openjdk.java.net/jdk18u/pull/7/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=7&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274751
  Stats: 19 lines in 4 files changed: 2 ins; 0 del; 17 mod
  Patch: https://git.openjdk.java.net/jdk18u/pull/7.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18u pull/7/head:pull/7

PR: https://git.openjdk.java.net/jdk18u/pull/7