cargo: Bump rustc to 1.89 (#36818)

Update Rustc to 1.89.

Reviewable by commit.

Leftover work:
- #37330 
- #38777

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Co-authored-by: sagudev <16504129+sagudev@users.noreply.github.com>

components/layout/layout_impl.rs

@@ -997,9 +997,11 @@ impl LayoutThread {
         }
 
         let root_node = root_element.as_node();
-        let damage_from_environment = viewport_changed
-            .then_some(RestyleDamage::RELAYOUT)
-            .unwrap_or_default();
+        let damage_from_environment = if viewport_changed {
+            RestyleDamage::RELAYOUT
+        } else {
+            Default::default()
+        };
         let damage = compute_damage_and_repair_style(
             &layout_context.style_context,
             root_node.to_threadsafe(),