[roll] Roll fuchsia [devicetree] Support metadata and visitor loading in host tools

Expand host-side devicetree manager and visitor logic to support
metadata processing and dynamic visitor loading.

Key changes:
- Added LoadVisitorsHost to enable host-side tools to load visitors
  from shared libraries (.so).
- Updated PublisherInterface and PublisherHost to handle metadata and
  power configuration as text, enabling dumping of these properties
  in host-side tools.
- Implemented zx_status_get_string for host to resolve linker issues
  encountered when building host-side tools.

These additions allow host-side tools to fully verify devicetree nodes,
including their metadata and dynamic visitor logic.

Original-Bug: 507041016
Test: fx test devicetree-manager-host-test
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1592124
Original-Revision: fa9418e106fcdf3ef340272adee4593e35043928
GitOrigin-RevId: 87834c200d9ef075c144f130f85c7932cd7fe288
Change-Id: I63b00f21e8103edb16497eb76da8bc386d8621ac
diff --git a/stem b/stem
index 89fae39..e571edf 100644
--- a/stem
+++ b/stem
@@ -8,6 +8,6 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="443c28628a74dd063a5f35d66a3118d229a6995f"/>
+            revision="fa9418e106fcdf3ef340272adee4593e35043928"/>
   </imports>
 </manifest>