RFR: 8313395: LotsUnloadTest.java fails with OOME transiently with libgraal

[Ioi Lam]

This test fails intermittently due to delayed class unloading when both libgraal abd Xcomp enabled. Since the purpose of this test is neither to test libgraal nor Xcomp, it's better to exclude the test in this scenario to reduce noise.

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Commit messages:
 - 8313395: LotsUnloadTest.java fails with OOME transiently with libgraal

Changes: https://git.openjdk.org/jdk/pull/20648/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20648&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8313395
  Stats: 4 lines in 1 file changed: 1 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20648.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20648/head:pull/20648

PR: https://git.openjdk.org/jdk/pull/20648