[roll] Roll fuchsia [a11y] Reset semantic level to kNormalNavigation before explore action.

Original-Bug: 84614
TEST: fx test a11y-lib-tests, manual
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/581884
Original-Revision: d40aa94102daf8572080d75a9b21f248ceb9c799
GitOrigin-RevId: 30bc2766c7c83511f8a3efc5142770a3b305d1a8
Change-Id: Ifa354705ef81b4b1aafd020624324d0f86b289cf
diff --git a/stem b/stem
index a567892..6ffeba7 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="78ab60c1611d63ff70b1f85a02d4bc1547fd9705"/>
+             revision="d40aa94102daf8572080d75a9b21f248ceb9c799"/>
   </projects>
   <hooks>
     <hook name="install-environment"