[jdk25u-dev] RFR: 8369505: jhsdb jstack cannot handle continuation stub [v2]

[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.

David Briemann has updated the pull request incrementally with two additional commits since the last revision:

 - Backport 8370201
 - Backport 8370036

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

Changes:
  - all: https://git.openjdk.org/jdk25u-dev/pull/23/files
  - new: https://git.openjdk.org/jdk25u-dev/pull/23/files/95eb7fd0..75c9d644

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=23&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=23&range=00-01

  Stats: 9 lines in 5 files changed: 0 ins; 0 del; 9 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