Fix clippy::needless_borrow lint violations (#36444)

Release Notes:

- N/A

crates/onboarding/src/onboarding.rs

@@ -494,7 +494,7 @@ impl Onboarding {
         window
             .spawn(cx, async move |cx| {
                 client
-                    .sign_in_with_optional_connect(true, &cx)
+                    .sign_in_with_optional_connect(true, cx)
                     .await
                     .notify_async_err(cx);
             })

crates/onboarding/src/welcome.rs

@@ -104,7 +104,7 @@ impl<const COLS: usize> Section<COLS> {
                 self.entries
                     .iter()
                     .enumerate()
-                    .map(|(index, entry)| entry.render(index_offset + index, &focus, window, cx)),
+                    .map(|(index, entry)| entry.render(index_offset + index, focus, window, cx)),
             )
     }
 }