RFR: 8296554: MouseLocationOnScreenTest sometime fails when system is busy [v3]

[Gopal Pattnaik]

> There was a Assertion fail issue in mouse location test case JDK-8296554,
> Reason: We felt the one mili second delay time for the Robot test may be insufficient in few OS.
> Solution: We Changed the delay time to three mili second.
> 
> Verification:
> Tested in Windows 11, and the Assert fail issue is not found.

Gopal Pattnaik has updated the pull request incrementally with one additional commit since the last revision:

  Addressed Review comments

-------------

Changes:
  - all: https://git.openjdk.org/jfx/pull/1772/files
  - new: https://git.openjdk.org/jfx/pull/1772/files/472b8f8b..5adddb78

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1772&range=02
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1772&range=01-02

  Stats: 16 lines in 1 file changed: 12 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jfx/pull/1772.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1772/head:pull/1772

PR: https://git.openjdk.org/jfx/pull/1772