RFR: 8362237: IllegalArgumentException in the launcher when exception without stack trace is thrown

[Christian Stein]

Please review this change introducing a range check before pruning
stacktrace elements in source launch mode. An additional `null`-check
was also added to this change set.

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Commit messages:
 - 8362237: IllegalArgumentException in the launcher when exception without stack trace is thrown

Changes: https://git.openjdk.org/jdk/pull/26315/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26315&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8362237
  Stats: 46 lines in 2 files changed: 40 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/26315.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26315/head:pull/26315

PR: https://git.openjdk.org/jdk/pull/26315