RFR: 8329674: JvmtiEnvThreadState::reset_current_location function should use JvmtiHandshake [v3]

[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 internal functions JvmtiEnvThreadState::reset_current_location on the base of JvmtiHandshake and JvmtiUnitedHandshakeClosure classes.
> 
> Testing:
>  - Ran mach5 tiers 1-6

Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision:

  review: remove unneded check for is_vthread_alive; do not call do_thread from do_vthread

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18630/files
  - new: https://git.openjdk.org/jdk/pull/18630/files/39717f37..86775376

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18630&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18630&range=01-02

  Stats: 8 lines in 1 file changed: 0 ins; 5 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/18630.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18630/head:pull/18630

PR: https://git.openjdk.org/jdk/pull/18630