Fixed test bug where mouse location was being calculated before robot mouseMove operation was complete
------------- Commit messages: - added robot wait to prevent mouse position from being calculated before robot finishes mouseMove Changes: https://git.openjdk.org/jdk/pull/10363/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10363&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8292588 Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/10363.diff Fetch: git fetch https://git.openjdk.org/jdk pull/10363/head:pull/10363 PR: https://git.openjdk.org/jdk/pull/10363