[jdk23] RFR: 8335134: Test com/sun/jdi/BreakpointOnClassPrepare.java timeout

[Chris Plummer]

Clean backport. Need to backport this since it was introduced with the new test in [JDK-8333542](https://bugs.openjdk.org/browse/JDK-8333542), which has also been backpoted to 23.

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Commit messages:
 - Backport 4e8cbf884ab1eee9c3110712ab62edc706e948ba

Changes: https://git.openjdk.org/jdk/pull/19976/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19976&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335134
  Stats: 9 lines in 1 file changed: 8 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/19976.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19976/head:pull/19976

PR: https://git.openjdk.org/jdk/pull/19976