[jdk17u-dev] RFR: 8294699: Launcher causes lingering busy cursor

[Martin Doerr]

Clean backport of [JDK-8294699](https://bugs.openjdk.org/browse/JDK-8294699).

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Commit messages:
 - Backport d3df3eb5d7f5537ade917db7a36caba028f94111

Changes: https://git.openjdk.org/jdk17u-dev/pull/2497/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2497&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294699
  Stats: 78 lines in 1 file changed: 76 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2497.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2497/head:pull/2497

PR: https://git.openjdk.org/jdk17u-dev/pull/2497