RFR: 8355413: Re-enable InitializeJavaFXLaunchTests on Xorg

[Jayathirth D V]

As part of https://bugs.openjdk.org/browse/JDK-8353557, InitializeJavaFXLaunchTests were disabled as they were failing in Ubuntu24.04 VM and product issue https://bugs.openjdk.org/browse/JDK-8353644 was created.

But after verifying this test on actual Ubuntu 24.04 hardware it is identified that this test doesn't fail even multiple iterations. So we need to re-enable these tests.

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Commit messages:
 - 8355413: [Xorg] Re-enable InitializeJavaFXLaunchTests on Linux

Changes: https://git.openjdk.org/jfx/pull/1792/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1792&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8355413
  Stats: 10 lines in 2 files changed: 0 ins; 10 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1792.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1792/head:pull/1792

PR: https://git.openjdk.org/jfx/pull/1792