chore: Fix several style lints (#17488)

It's not comprehensive enough to start linting on `style` group, but
hey, it's a start.

Release Notes:

- N/A

crates/collab_ui/src/collab_ui.rs

@@ -31,7 +31,7 @@ pub fn init(app_state: &Arc<AppState>, cx: &mut AppContext) {
     chat_panel::init(cx);
     collab_panel::init(cx);
     notification_panel::init(cx);
-    notifications::init(&app_state, cx);
+    notifications::init(app_state, cx);
     title_bar::init(cx);
     vcs_menu::init(cx);
 }