[lworld] RFR: 8378799: [lworld] ProblemList java/lang/Thread/virtual/stress/Skynet.java#Z with --enable-preview

[Daniel D. Daugherty]

Trivial fixes to ProblemList misc tests:
- [JDK-8378799](https://bugs.openjdk.org/browse/JDK-8378799) [lworld] ProblemList java/lang/Thread/virtual/stress/Skynet.java#Z with --enable-preview
- [JDK-8378801](https://bugs.openjdk.org/browse/JDK-8378801) [lworld] ProblemList java/awt/image/multiresolution/MultiResolutionToolkitImageTest.java on macosx-aarch64
- [JDK-8378803](https://bugs.openjdk.org/browse/JDK-8378803) [lworld] ProblemList two more jdk/jfr/event/oldobject tests that crash due to JDK-8374950

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Commit messages:
 - Merge lworld
 - 8378803: [lworld] ProblemList two more jdk/jfr/event/oldobject tests that crash due to JDK-8374950
 - 8378801: [lworld] ProblemList java/awt/image/multiresolution/MultiResolutionToolkitImageTest.java on macosx-aarch64
 - 8378799: [lworld] ProblemList java/lang/Thread/virtual/stress/Skynet.java#Z with --enable-preview
 - 8378706: [lworld] ProblemList runtime/cds/appcds/cacheObject/ArchivedFlatArrayTest.java in Xcomp mode

Changes: https://git.openjdk.org/valhalla/pull/2178/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2178&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8378799
  Stats: 7 lines in 2 files changed: 4 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/2178.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2178/head:pull/2178

PR: https://git.openjdk.org/valhalla/pull/2178