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/dom/collections/HTMLCollection-as-prototype.html.ini

@@ -0,0 +1,3 @@
+[HTMLCollection-as-prototype.html]
+  [HTMLCollection as a prototype and setting own properties]
+    expected: FAIL

tests/wpt/meta/dom/collections/HTMLCollection-delete.html.ini

@@ -0,0 +1,6 @@
+[HTMLCollection-delete.html]
+  [Strict id]
+    expected: FAIL
+
+  [Strict name]
+    expected: FAIL

tests/wpt/meta/dom/collections/HTMLCollection-own-props.html.ini

@@ -0,0 +1,3 @@
+[HTMLCollection-own-props.html]
+  [Setting array index while indexed property doesn't exist (strict)]
+    expected: FAIL

tests/wpt/meta/dom/collections/HTMLCollection-supported-property-indices.html.ini

@@ -0,0 +1,12 @@
+[HTMLCollection-supported-property-indices.html]
+  [Handling of property names that look like integers around 2^31]
+    expected: FAIL
+
+  [Handling of property names that look like integers around 2^32]
+    expected: FAIL
+
+  [Trying to set an expando that would shadow an already-existing indexed property]
+    expected: FAIL
+
+  [Trying to set an expando with an indexed property name past the end of the list]
+    expected: FAIL

tests/wpt/meta/dom/collections/HTMLCollection-supported-property-names.html.ini

@@ -0,0 +1,3 @@
+[HTMLCollection-supported-property-names.html]
+  [Trying to set an expando that would shadow an already-existing named property]
+    expected: FAIL