RFR: 8329491: GetThreadListStackTraces function should use JvmtiHandshake

[Serguei Spitsyn]

The internal JVM TI `JvmtiHandshake` and `JvmtiUnitedHandshakeClosure` classes were introduced in the JDK 22 to unify/simplify the JVM TI functions supporting implementation of the virtual threads. This enhancement is to refactor the JVM TI function `GetThreadListStackTraces` on the base of `JvmtiHandshake` and `JvmtiUnitedHandshakeClosure` classes.

Testing:
 - Ran mach5 tiers 1-6

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

Commit messages:
 - 8329491: GetThreadListStackTraces function should use JvmtiHandshake

Changes: https://git.openjdk.org/jdk/pull/18574/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18574&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8329491
  Stats: 42 lines in 3 files changed: 16 ins; 19 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/18574.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18574/head:pull/18574

PR: https://git.openjdk.org/jdk/pull/18574