[jdk20] RFR: 8298976: ProblemList java/util/concurrent/ExecutorService/CloseTest.java on macosx-aarch64

[Daniel D. Daugherty]

A batch a trivial fixes to ProblemList tests:
[JDK-8298976](https://bugs.openjdk.org/browse/JDK-8298976) ProblemList java/util/concurrent/ExecutorService/CloseTest.java on macosx-aarch64
[JDK-8298977](https://bugs.openjdk.org/browse/JDK-8298977) ProblemList vmTestbase/nsk/stress/strace/strace002.java on 2 platforms
[JDK-8298978](https://bugs.openjdk.org/browse/JDK-8298978) ProblemList vmTestbase/nsk/stress/strace/strace003.java on 2 platforms

-------------

Commit messages:
 - 8298978: ProblemList vmTestbase/nsk/stress/strace/strace003.java on 2 platforms
 - 8298977: ProblemList vmTestbase/nsk/stress/strace/strace002.java on 2 platforms
 - 8298976: ProblemList java/util/concurrent/ExecutorService/CloseTest.java on macosx-aarch64

Changes: https://git.openjdk.org/jdk20/pull/50/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk20&pr=50&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298976
  Stats: 3 lines in 2 files changed: 3 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk20/pull/50.diff
  Fetch: git fetch https://git.openjdk.org/jdk20 pull/50/head:pull/50

PR: https://git.openjdk.org/jdk20/pull/50