[jdk25u-dev] RFR: 8369505: jhsdb jstack cannot handle continuation stub

[David Briemann]

This pull request contains a backport of commit [16539998](https://github.com/openjdk/jdk/commit/1653999871c8d7b1e61b44f8525e09b2cd0bdb6b) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Yasumasa Suenaga on 16 Oct 2025 and was reviewed by Chris Plummer and Patricio Chilano Mateo.

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Commit messages:
 - Backport 1653999871c8d7b1e61b44f8525e09b2cd0bdb6b

Changes: https://git.openjdk.org/jdk25u-dev/pull/23/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=23&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369505
  Stats: 297 lines in 10 files changed: 293 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/23.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/23/head:pull/23

PR: https://git.openjdk.org/jdk25u-dev/pull/23