Another batch of lint fixes (#36521)

- **Enable a bunch of extra lints**
- **First batch of fixes**
- **More fixes**

Release Notes:

- N/A

crates/tasks_ui/src/modal.rs

@@ -550,7 +550,7 @@ impl PickerDelegate for TasksModalDelegate {
                     list_item.tooltip(move |_, _| item_label.clone())
                 })
                 .map(|item| {
-                    let item = if matches!(source_kind, TaskSourceKind::UserInput)
+                    if matches!(source_kind, TaskSourceKind::UserInput)
                         || Some(ix) <= self.divider_index
                     {
                         let task_index = hit.candidate_id;
@@ -579,8 +579,7 @@ impl PickerDelegate for TasksModalDelegate {
                         item.end_hover_slot(delete_button)
                     } else {
                         item
-                    };
-                    item
+                    }
                 })
                 .toggle_state(selected)
                 .child(highlighted_location.render(window, cx)),