Handle auth for claude (#36442)

We'll now use the anthropic provider to get credentials for `claude` and
embed its configuration view in the panel when they are not present.

Release Notes:

- N/A

crates/language_models/src/provider/mistral.rs

@@ -243,7 +243,12 @@ impl LanguageModelProvider for MistralLanguageModelProvider {
         self.state.update(cx, |state, cx| state.authenticate(cx))
     }
 
-    fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
+    fn configuration_view(
+        &self,
+        _target_agent: language_model::ConfigurationViewTargetAgent,
+        window: &mut Window,
+        cx: &mut App,
+    ) -> AnyView {
         cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
             .into()
     }