[jdk21u-dev] RFR: 8328303: 3 JDI tests timed out with UT enabled

[Goetz Lindenmaier]

I backport this to improve testing. Without this, 8326898 might cause problems.

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

Commit messages:
 - Backport bc73963974a824d77d54b8b0edbf8f05262b721c

Changes: https://git.openjdk.org/jdk21u-dev/pull/967/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=967&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328303
  Stats: 97 lines in 3 files changed: 37 ins; 22 del; 38 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/967.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/967/head:pull/967

PR: https://git.openjdk.org/jdk21u-dev/pull/967