Update model selector (#15665)

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

crates/language_model/src/provider/ollama.rs

@@ -108,6 +108,10 @@ impl LanguageModelProvider for OllamaLanguageModelProvider {
         LanguageModelProviderName(PROVIDER_NAME.into())
     }
 
+    fn icon(&self) -> IconName {
+        IconName::AiOllama
+    }
+
     fn provided_models(&self, cx: &AppContext) -> Vec<Arc<dyn LanguageModel>> {
         self.state
             .read(cx)