sane use order, again

crates/viewer/re_ui/src/modal.rs

@@ -1,6 +1,7 @@
-use crate::{DesignTokens, UiExt as _};
 use eframe::emath::NumExt;
 
+use crate::{DesignTokens, UiExt as _};
+
 /// Helper object to handle a [`ModalWrapper`] window.
 ///
 /// A [`ModalWrapper`] is typically held only so long as it is displayed, so it's typically stored in an