Enable more css tests (#31469)

* Enable more css tests

In particular, these directories are no longer skipped:
 - CSS1 (has no tests)
 - css-box (except margin-trim)
 - css-cascade
 - css-display (except run-in)
 - css-easing
 - css-env
 - css-lists
 - css-namespaces
 - css-overflow
 - css-pseudo
 - css-sizing (except aspect-ratio and contain-intrinsic-size)
 - css-syntax
 - reference
 - support (has no tests)

* Sort list properly

* Explicitly list skipped directories

* Do not skip css tests by default

* Add expectations

tests/wpt/meta/css/css-cascade/layer-media-query.html.ini

@@ -0,0 +1,24 @@
+[layer-media-query.html]
+  [A1 Basic]
+    expected: FAIL
+
+  [A2 Basic]
+    expected: FAIL
+
+  [B1 Basic import]
+    expected: FAIL
+
+  [B2 Basic import]
+    expected: FAIL
+
+  [C1 Reordering]
+    expected: FAIL
+
+  [C2 Reordering]
+    expected: FAIL
+
+  [C3 Reordering]
+    expected: FAIL
+
+  [C4 Reordering]
+    expected: FAIL