RFR: 8335137: Disable the SUSPEND_NONE mode of BreakpointOnClassPrepare.java

[SendaoYan]

Hi all,
The newly added test `com/sun/jdi/BreakpointOnClassPrepare.java` fails at `SUSPEND_NONE` mode.
To make this test less noisy, should we disable the SUSPEND_NONE mode for now.

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

Commit messages:
 - 8335137: Disable the SUSPEND_NONE mode of BreakpointOnClassPrepare.java

Changes: https://git.openjdk.org/jdk/pull/19897/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19897&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335137
  Stats: 10 lines in 1 file changed: 8 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/19897.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19897/head:pull/19897

PR: https://git.openjdk.org/jdk/pull/19897