fix(host): align descriptor and publication identity

crates/wip-host/tests/host.rs

@@ -165,7 +165,7 @@ fn registry_exposes_opaque_validated_descriptor_observations() {
     assert_ne!(reader.reference().as_str(), "Reader");
     let observation = registry.observe(reader.reference()).unwrap();
     assert_eq!(observation.reference, *reader.reference());
-    assert_eq!(observation.descriptor.name, "Reader");
+    assert_eq!(observation.descriptor.name, reader.reference().as_str());
     assert_eq!(observation.validator, None);
     observation.descriptor.validate().unwrap();
 
@@ -197,6 +197,15 @@ fn publication_is_explicit_ordered_qualified_and_request_scoped() {
             reader.reference().as_str().to_owned()
         ]
     );
+    wip_protocol::InterfaceObservation {
+        object: object.clone(),
+        descriptors: vec![
+            registry.observe(writer.reference()).unwrap().descriptor,
+            registry.observe(reader.reference()).unwrap().descriptor,
+        ],
+    }
+    .validate()
+    .unwrap();
     assert!(!format!("{object:?}").contains("private/backend/path"));
 
     let writer_result = publication