Fix clippy::needless_borrow lint violations (#36444)

Release Notes:

- N/A

crates/agent_ui/src/inline_prompt_editor.rs

@@ -75,7 +75,7 @@ impl<T: 'static> Render for PromptEditor<T> {
                 let codegen = codegen.read(cx);
 
                 if codegen.alternative_count(cx) > 1 {
-                    buttons.push(self.render_cycle_controls(&codegen, cx));
+                    buttons.push(self.render_cycle_controls(codegen, cx));
                 }
 
                 let editor_margins = editor_margins.lock();