[fuchsia][sysmem2] route fuchsia.sysmem2.Allocator

Closes https://github.com/dart-lang/sdk/pull/55682

GitOrigin-RevId: 5d2d87cb8f01e9aaa068eeb7435558095fbbbc09
Change-Id: I580c70c1c8d3519ad9a2fdfb3732bc6bebf73c22
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/365871
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
diff --git a/runtime/vm.shard.cml b/runtime/vm.shard.cml
index f96a36c..8fbd1c6 100644
--- a/runtime/vm.shard.cml
+++ b/runtime/vm.shard.cml
@@ -35,6 +35,7 @@
         "fuchsia.net.name.Lookup",
         "fuchsia.posix.socket.Provider",
         "fuchsia.sysmem.Allocator",
+        "fuchsia.sysmem2.Allocator",
         "fuchsia.timezone.Timezone",
         "fuchsia.tracing.provider.Registry",
       ],