Introduce a short-term solution for flickering (#8542)

This uses bounds checking alone to determine hover state to avoid
flicker. It's a short-term solution because the rendering is incorrect.
We think this is better than flickering though and buys us some time as
we work on a more robust solution overall.

Release Notes:

- Fixed flickering when hovering.

---------

Co-authored-by: Nathan <nathan@zed.dev>

crates/editor/src/element.rs

@@ -923,9 +923,15 @@ impl EditorElement {
                         .as_ref()
                         .is_some_and(|hovered_link_state| !hovered_link_state.links.is_empty())
                     {
-                        cx.set_cursor_style(CursorStyle::PointingHand);
+                        cx.set_cursor_style(
+                            CursorStyle::PointingHand,
+                            interactive_text_bounds.stacking_order.clone(),
+                        );
                     } else {
-                        cx.set_cursor_style(CursorStyle::IBeam);
+                        cx.set_cursor_style(
+                            CursorStyle::IBeam,
+                            interactive_text_bounds.stacking_order.clone(),
+                        );
                     }
                 }
 
@@ -1552,7 +1558,10 @@ impl EditorElement {
         };
         let mut mouse_position = cx.mouse_position();
         if interactive_track_bounds.visibly_contains(&mouse_position, cx) {
-            cx.set_cursor_style(CursorStyle::Arrow);
+            cx.set_cursor_style(
+                CursorStyle::Arrow,
+                interactive_track_bounds.stacking_order.clone(),
+            );
         }
 
         cx.on_mouse_event({