Revert "[vm] Remove --causal-async-stacks flag"

This reverts commit b1f1aee94d8730d7d3b6def8a1fffec2181fcfb1.

Reason for revert: Some left-over uses in g3 need to removed first
(some were removed in b/380758599 but apparently there's some
usages left).

Original change's description:
> [vm] Remove --causal-async-stacks flag
> The flag isn't used anywhere in our tests or in embedder code. Turning
> it on will result in a VM startup error.
> We should therefore remove all uses of the flag and the flag itself.
> TEST=Existing test suite.
> Change-Id: I19dfba052df7948dfdb379c0610dab67ebbcd12d
> Reviewed-on:
> Reviewed-by: Clement Skau <>
> Commit-Queue: Martin Kustermann <>,

Change-Id: I03aad46f46153d5ea4ac2fcdd5685d0ef2a0d9af
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-by: Martin Kustermann <>
Commit-Queue: Martin Kustermann <>
diff --git a/commits.json b/commits.json
index c98f863..51e618c 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
-  "sdk":"0740566438c510835b87cad99f088c7302c5ed5d"
+  "sdk":"0999d13ff3ceb5fdd83ea9935065f5c93906b253"
\ No newline at end of file