[lworld] RFR: 8369066: [lworld] UncaughtNativeExceptionTest.java fails with UnsupportedClassVersionError

[Matias Saavedra Silva]

The `--enable-preview` was not propagated correctly to the sub-process used in this test so this option was added explicitly.

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Commit messages:
 - 8369066: [lworld] UncaughtNativeExceptionTest.java fails with UnsupportedClassVersionError

Changes: https://git.openjdk.org/valhalla/pull/1663/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1663&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369066
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/valhalla/pull/1663.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1663/head:pull/1663

PR: https://git.openjdk.org/valhalla/pull/1663