Fix potential clippy warning for NodeDamage enum variant (#37391)

The default of `enum-variant-name-threshold` is 3, so adding any new
variants will lead to the lint being triggered, reference:

[enum_variant_names](https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names).
This PR fix this potential clippy lint warning for facilitate the
addition of new variant in following PR about incremental box tree
update.

Testing: No logic changed, just covered by existing WPT tests
Fixes: None

Signed-off-by: sharpshooter_pt <ibluegalaxy_taoj@163.com>

components/script/dom/node.rs

@@ -3912,9 +3912,9 @@ impl VirtualMethods for Node {
 #[derive(Clone, Copy, MallocSizeOf, PartialEq)]
 pub(crate) enum NodeDamage {
     /// The node's `style` attribute changed.
-    NodeStyleDamaged,
+    Style,
     /// Other parts of a node changed; attributes, text content, etc.
-    OtherNodeDamage,
+    Other,
 }
 
 pub(crate) enum ChildrenMutation<'a> {