[jdk21u-dev] RFR: 8357172: Extend try block in nsk/jdi tests to capture exceptions thrown by Debuggee.classByName()

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 14e41ab055955ffd7cf9e8129cc3269b4e3807b7

Changes: https://git.openjdk.org/jdk21u-dev/pull/2432/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2432&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8357172
  Stats: 514 lines in 22 files changed: 145 ins; 199 del; 170 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2432.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2432/head:pull/2432

PR: https://git.openjdk.org/jdk21u-dev/pull/2432