A manual regression test for JFXPanel orientation fix in [JDK-8317836](https://bugs.openjdk.org/browse/JDK-8317836) is added
------------- Commit messages: - Test fix - Test fix Changes: https://git.openjdk.org/jfx/pull/1276/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1276&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8319147 Stats: 120 lines in 1 file changed: 120 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jfx/pull/1276.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1276/head:pull/1276 PR: https://git.openjdk.org/jfx/pull/1276
