core: Fix debug_ui mouse search on HiDPI display

We need to scale the mouse position that egui gives us
by the scale factor, in order to get in the format
expected by our inverse view matrix

core/src/debug_ui/display_object/search.rs

@@ -89,6 +89,10 @@ impl DisplayObjectSearchWindow {
         self.unique_results.clear();
 
         if let Some(pointer) = egui_ctx.pointer_latest_pos() {
+            let pointer = Vec2::new(
+                pointer.x * egui_ctx.pixels_per_point(),
+                pointer.y * egui_ctx.pixels_per_point(),
+            );
             let inverse_view_matrix = context.stage.inverse_view_matrix();
             let pos = inverse_view_matrix
                 * Point::from_pixels(pointer.x as f64, pointer.y as f64 - movie_offset);