[roll] Roll fuchsia [bt][affordances] Move request service into its own function

Fuchsia formatter was having trouble formatting otherwise.

Test: refactor only
Original-Bug: 409779607
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1266787
Original-Revision: f4d12ba74233f9d728a3421f415c53972a59f05e
GitOrigin-RevId: d68d6375ed943f51fc473b2c7e6644a945695564
Change-Id: If7a3af4643672064b87f3aefb08d22cf66ef3399
diff --git a/stem b/stem
index fd00511..081e664 100644
--- a/stem
+++ b/stem
@@ -8,7 +8,7 @@
              root=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="37d90a722bd4ffb3f9e372a7952ab91d7cf53a4b"
+             revision="f4d12ba74233f9d728a3421f415c53972a59f05e"
              />
   </imports>
   <projects>