test: align Profile consumers with explicit default

crates/workspace-server/src/hosts.rs

@@ -3740,7 +3740,13 @@ fn builtin_profile_source_archive(
     profile: &ProfileSelector,
 ) -> Result<ProfileSourceArchive, String> {
     let selected_profile = match profile {
-        ProfileSelector::Builtin(name) => name.clone(),
+        ProfileSelector::Builtin(name) => {
+            if name.starts_with("builtin:") {
+                name.clone()
+            } else {
+                format!("builtin:{name}")
+            }
+        }
         ProfileSelector::Named(name) => {
             return Err(format!(
                 "embedded runtime does not provide named Profile `{name}`"

crates/workspace-server/src/server.rs

@@ -18155,7 +18155,12 @@ mod tests {
                 },
             )
             .unwrap();
-        assert_eq!(existing.state, WorkerOperationState::Accepted);
+        assert_eq!(
+            existing.state,
+            WorkerOperationState::Accepted,
+            "diagnostics: {:?}",
+            existing.diagnostics
+        );
         let worker_id = existing.worker.unwrap().worker.worker_id;
         let worker = api
             .runtime