Enable clippy::borrow_deref_ref (#8894)

This PR enables the
[`clippy::borrow_deref_ref`](https://rust-lang.github.io/rust-clippy/master/index.html#/borrow_deref_ref)
rule and fixes the outstanding violations.

Release Notes:

- N/A

crates/workspace/src/pane.rs

@@ -1164,7 +1164,7 @@ impl Pane {
                     matches!(
                         WorkspaceSettings::get_global(cx).autosave,
                         AutosaveSetting::OnFocusChange | AutosaveSetting::OnWindowChange
-                    ) && Self::can_autosave_item(&*item, cx)
+                    ) && Self::can_autosave_item(item, cx)
                 })?;
                 if !will_autosave {
                     let answer = pane.update(cx, |pane, cx| {