git: openjdk/loom: fibers: Hide continuation frames

[duke]

Changeset: 3968409e
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2023-03-24 16:26:21 +0000
URL:       https://git.openjdk.org/loom/commit/3968409e7017d55e9d0516bc835de46c51ad9c8b

Hide continuation frames

! src/hotspot/share/prims/stackwalk.cpp
! src/java.base/share/classes/jdk/internal/vm/Continuation.java
! test/jdk/java/lang/Thread/virtual/GetStackTrace.java
! test/jdk/jdk/internal/vm/Continuation/Basic.java
! test/jdk/jdk/internal/vm/Continuation/BasicExt.java
! test/jdk/jdk/internal/vm/Continuation/Scoped.java