Use read() over read_with() to improve readability in simple cases (#31455)

Follow up to: #31263 

Release Notes:

- N/A

crates/agent/src/message_editor.rs

@@ -1185,9 +1185,10 @@ impl MessageEditor {
     fn reload_context(&mut self, cx: &mut Context<Self>) -> Task<Option<ContextLoadResult>> {
         let load_task = cx.spawn(async move |this, cx| {
             let Ok(load_task) = this.update(cx, |this, cx| {
-                let new_context = this.context_store.read_with(cx, |context_store, cx| {
-                    context_store.new_context_for_thread(this.thread.read(cx), None)
-                });
+                let new_context = this
+                    .context_store
+                    .read(cx)
+                    .new_context_for_thread(this.thread.read(cx), None);
                 load_context(new_context, &this.project, &this.prompt_store, cx)
             }) else {
                 return;