Track regions instead of clicks.

Get rid of superfluous params in RenderParams related to hover & click state.

Co-authored-by: Antonio <antonio@zed.dev>

crates/gpui/src/app.rs

@@ -3304,11 +3304,15 @@ impl<'a, 'b, V: View> ViewContext<'a, 'b, V> {
         let region_id = MouseRegionId::new::<Tag>(self.view_id, region_id);
         MouseState {
             hovered: self.window.hovered_region_ids.contains(&region_id),
-            clicked: self
-                .window
-                .clicked_region_ids
-                .get(&region_id)
-                .and_then(|_| self.window.clicked_button),
+            clicked: if let Some((clicked_region_id, button)) = self.window.clicked_region {
+                if region_id == clicked_region_id {
+                    Some(button)
+                } else {
+                    None
+                }
+            } else {
+                None
+            },
             accessed_hovered: false,
             accessed_clicked: false,
         }