[roll] Roll fuchsia [build][rust] Add crate_name to target mapping

Allow rustdoc-link to read crate_name directly from rust_target_mapping
and remove the unused extern, searchdir, and disable_rustdoc_binary
fields. Filter disabled targets in Metadata.parse and set
disable_rustdoc on non-rlib/proc-macro artifacts that previously relied
on lacking extern to be skipped.

Test: Ran firebase-docs try builder
Original-Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1837804
Original-Original-Revision: acee4e8af6745d6d8b4d0a59cd6e3ea4fd06dc25
GitOrigin-RevId: 03472fc7e6c0f288d7e6b6bed3ef019ccb2afdcd
Change-Id: If1f2d709c3cacf9f825ca582db7ce34942f59ffd
Reviewed-on: https://fuchsia-review.googlesource.com/c/integration/+/1839953
Cr-Commit-Position: refs/heads/main@{#202811}
diff --git a/stem b/stem
index c5a117b..cf9c436 100644
--- a/stem
+++ b/stem
@@ -8,6 +8,6 @@
             manifest="manifests/platform"
             root=""
             remote="https://fuchsia.googlesource.com/fuchsia"
-            revision="751656e390d23d6223004ae6dc513cb389f73cdc"/>
+            revision="acee4e8af6745d6d8b4d0a59cd6e3ea4fd06dc25"/>
   </imports>
 </manifest>