[roll] Roll fuchsia [component][fuzzing] Make MonitorClients async

This CL updates the MonitorsClient to run asynchronously.

It also expands the aliased asyn types for convenience.

The unit tests are updated in a subsequent CL.

Original-Bug: 92490
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/644537
Original-Revision: 2675171b52ce6251cb64eb8eff5a7a76a0f3d3e3
GitOrigin-RevId: 3dc2ca4a405c2179bc8ff5c5af058790d808d160
Change-Id: I4beff52c649d7cf61542aab0e709aa849ecf05f0

stem

diff --git a/stem b/stem
index d8439f7..91c487b 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="810f97a1275a8e558ff089d028de2207b03a3f8e"/>
+             revision="2675171b52ce6251cb64eb8eff5a7a76a0f3d3e3"/>
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   <hooks>
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