RFR: 8321938: java/foreign/critical/TestCriticalUpcall.java does not need a core file

[Daniel D. Daugherty]

A trivial fix to disable core file generation in java/foreign/critical/TestCriticalUpcall.java.

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Commit messages:
 - 8321938: java/foreign/critical/TestCriticalUpcall.java does not need a core file

Changes: https://git.openjdk.org/jdk/pull/17476/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17476&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8321938
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17476.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17476/head:pull/17476

PR: https://git.openjdk.org/jdk/pull/17476