RFR: 8368375: Skip intermittently failing SWTCursorsTest [v2]

[Jayathirth D V]

> This test is failing intermittently on macOS and Linux platforms and it will be fixed under [JDK-8367599](https://bugs.openjdk.org/browse/JDK-8367599).
> 
> We need to skip this until [JDK-8367599](https://bugs.openjdk.org/browse/JDK-8367599) is fixed.
> 
> javafx.base/com.sun.javafx.PlatformUtil helps to determine individual platforms on which test is running. But this module is exposed only to system tests and not to SWT tests. So i am replicating this test utility code in SWTCursorsTest.

Jayathirth D V has updated the pull request incrementally with one additional commit since the last revision:

  Disable test on all platforms

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

Changes:
  - all: https://git.openjdk.org/jfx/pull/1917/files
  - new: https://git.openjdk.org/jfx/pull/1917/files/5a38fa74..d77b91e5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1917&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1917&range=00-01

  Stats: 10 lines in 1 file changed: 1 ins; 8 del; 1 mod
  Patch: https://git.openjdk.org/jfx/pull/1917.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1917/head:pull/1917

PR: https://git.openjdk.org/jfx/pull/1917