RFR: 8324868: debug agent does not properly handle interrupts of a virtual thread [v3]

[Chris Plummer]

> Fix numerous debug agent issues and testing deficiencies related to Thread.interrupt(). As a first read you should look at the description in the CR. More details in first comment below.
> 
> Also, this PR is dependent on the fix for [JDK-8325187](https://bugs.openjdk.org/browse/JDK-8325187). The test might generate GHA failures in the meantime.
> 
> Tested with all svc tier1, tier2, and tier5 tests.

Chris Plummer 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 four additional commits since the last revision:

 - Merge branch 'master' into 8324868_interrupt
   Merge with master branch
 - review feed back. fix up some comments.
 - Undo some test changes that were suppose to be temporary
 - Improved debug agent thread interrupt handling

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17989/files
  - new: https://git.openjdk.org/jdk/pull/17989/files/0ba5b0ff..5958d34a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17989&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17989&range=01-02

  Stats: 98923 lines in 2067 files changed: 16605 ins; 76233 del; 6085 mod
  Patch: https://git.openjdk.org/jdk/pull/17989.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17989/head:pull/17989

PR: https://git.openjdk.org/jdk/pull/17989