style: Add attributes to the rule hash

See the discussion here: https://twitter.com/Rich_Harris/status/1433153204678799365

This should make attribute selectors roughly as fast as class selectors.

I think it's worth trying and see if perf bots complain on
micro-benchmarks and stylebench and such.

I made attributes more specific than local names, but less specific than
classes, which I think makes sense. When doing something like
foo[data-bar], filtering by data-bar seems likely to yield less elements
than filtering by foo.

While at it, remove the bloom filter pref since we shipped it in
bug 1704551 for 87 and we haven't heard complaints.

Differential Revision: https://phabricator.services.mozilla.com/D124383

components/style/stylist.rs

@@ -1961,7 +1961,15 @@ impl CascadeData {
             state_dependencies: ElementState::empty(),
             document_state_dependencies: DocumentState::empty(),
             mapped_ids: PrecomputedHashSet::default(),
-            selectors_for_cache_revalidation: SelectorMap::new(),
+            // NOTE: We disable attribute bucketing for revalidation because we
+            // rely on the buckets to match, but we don't want to just not share
+            // style across elements with different attributes.
+            //
+            // An alternative to this would be to perform a style sharing check
+            // like may_match_different_id_rules which would check that the
+            // attribute buckets match on all scopes. But that seems
+            // somewhat gnarly.
+            selectors_for_cache_revalidation: SelectorMap::new_without_attribute_bucketing(),
             animations: Default::default(),
             extra_data: ExtraStyleData::default(),
             effective_media_query_results: EffectiveMediaQueryResults::new(),