Run same tests for layout-2020 and layout-2013 (#30092)

Most tests were only being run for layout-2013, not for layout-2020.
This wasn't great since layout-2020 is now the default.

So this patch unifies the lists of included tests for both layouts.
For layout-2013 this implies adding css/css-content/, css/css-logical/
and css/css-masking/clip/.
For layout-2020 this implies adding several additional css tests, and
also tests like dom/, js/, html/, etc.

tests/wpt/meta/css/css-align/inheritance.html.ini

@@ -0,0 +1,48 @@
+[inheritance.html]
+  [Property align-content has initial value normal]
+    expected: FAIL
+
+  [Property align-content does not inherit]
+    expected: FAIL
+
+  [Property align-items has initial value normal]
+    expected: FAIL
+
+  [Property align-items does not inherit]
+    expected: FAIL
+
+  [Property align-self has initial value auto]
+    expected: FAIL
+
+  [Property align-self does not inherit]
+    expected: FAIL
+
+  [Property column-gap has initial value normal]
+    expected: FAIL
+
+  [Property column-gap does not inherit]
+    expected: FAIL
+
+  [Property justify-content has initial value normal]
+    expected: FAIL
+
+  [Property justify-content does not inherit]
+    expected: FAIL
+
+  [Property justify-items has initial value legacy center]
+    expected: FAIL
+
+  [Property justify-items does not inherit]
+    expected: FAIL
+
+  [Property justify-self has initial value auto]
+    expected: FAIL
+
+  [Property justify-self does not inherit]
+    expected: FAIL
+
+  [Property row-gap has initial value normal]
+    expected: FAIL
+
+  [Property row-gap does not inherit]
+    expected: FAIL