RFR: 8329674: JvmtiEnvThreadState::reset_current_location 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 internal functions JvmtiEnvThreadState::reset_current_location on the base of JvmtiHandshake and JvmtiUnitedHandshakeClosure classes.

Testing:
 - Ran mach5 tiers 1-6

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Commit messages:
 - 8329674: JvmtiEnvThreadState::reset_current_location function should use JvmtiHandshake

Changes: https://git.openjdk.org/jdk/pull/18630/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18630&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8329674
  Stats: 108 lines in 2 files changed: 35 ins; 67 del; 6 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