Scale down status bar items (#3766)

This PR scales down the sizes of items in the status bar.

This brings us more in line with Zed1.

Release Notes:

- N/A

crates/workspace2/src/dock.rs

@@ -637,6 +637,7 @@ impl Render for PanelButtons {
                         .attach(menu_attach)
                         .trigger(
                             IconButton::new(name, icon)
+                                .icon_size(IconSize::Small)
                                 .selected(is_active_button)
                                 .on_click({
                                     let action = action.boxed_clone();