RFR: 8322744: VirtualThread.notifyJvmtiDisableSuspend should be static [v2]

[Serguei Spitsyn]

> The notification method `VirtualThread.notifyJvmtiDisableSuspend` should be static.
> The method disables/enables suspend of the current virtual thread, a no-op if the current thread is a platform thread. It is confusing for this to be an instance method, it should be static to make it clearer that it doesn't change the target thread.
> The notification method `VirtualThread.notifyJvmtiHideFrames` also has to be static as it does not use/need the virtual thread `this` argument.
> One detail to underline is that he intrinsic implementation needs to use the argument #0 instead of #1.
> 
> Testing:
> - The mach5 tiers 1-6 show no regressions

Serguei Spitsyn has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge
 - 8322744: VirtualThread.notifyJvmtiDisableSuspend should be static

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17298/files
  - new: https://git.openjdk.org/jdk/pull/17298/files/2b684607..66bcce95

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17298&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17298&range=00-01

  Stats: 17642 lines in 345 files changed: 12363 ins; 3111 del; 2168 mod
  Patch: https://git.openjdk.org/jdk/pull/17298.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17298/head:pull/17298

PR: https://git.openjdk.org/jdk/pull/17298