a couple build fixes

Author: analogrelay

sdk/cosmosdb/azure_data_cosmos/src/authorization_policy.rs

@@ -272,6 +272,7 @@ mod tests {
     use super::*;
 
     #[derive(Debug)]
+    #[cfg(feature = "key-auth")]
     struct TestTokenCredential(String);
 
     #[cfg_attr(target_arch = "wasm32", async_trait::async_trait(?Send))]

sdk/cosmosdb/azure_data_cosmos/src/models/mod.rs

@@ -1,7 +1,7 @@
+use azure_core::Model;
 use serde::{Deserialize, Serialize};
 use time::error::ComponentRange;
 use time::OffsetDateTime;
-use typespec_client_core::Model;
 
 #[cfg(doc)]
 use crate::DatabaseClientMethods;