[roll] Roll fuchsia [realm_builder] Remove ABI breakage

You can't add new members to a strict enum so this rolls back the
addition of RealmBuilderError.INVALID_CHILD_DECL. Its uses were changed
to INVALID_COMPONENT_DECL.

Original-Bug: 335446415
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1045032
Original-Revision: f24246b86c65a594b06929d5f5ab3d10ad13c0e7
GitOrigin-RevId: 6791e1dd5136544551cc876f42bc7b39c0d2e9b9
Change-Id: I8a3c216d3b21b8320fcddaa42335e1c6ec95acf9
diff --git a/stem b/stem
index 8a4f205..a5d0773 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="e1311bce910ea5026dd9bab52b756f9a4bccd8a3"/>
+             revision="f24246b86c65a594b06929d5f5ab3d10ad13c0e7"/>
   </projects>
   <hooks>
     <hook name="install-environment"