layout: Set color and text decoration on <select> elements by default (#38570)

This makes the default style for `<select>` elements match that of gecko
(https://searchfox.org/mozilla-central/rev/a1f4cb9fc03d81be41ca2ba81294592df784364d/layout/style/res/forms.css#217-243),
with some small modifications because servo does not have fancy things
like `color: -moz-ComboboxText;`.

Testing: Includes a new web platform test
Fixes: https://github.com/servo/servo/issues/37895

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

tests/wpt/meta/MANIFEST.json

@@ -357174,6 +357174,19 @@
          ],
          {}
         ]
+       ],
+       "select-text-decoration.html": [
+        "a697e0f7b0c3d3455b6595ee3064dbbe7baff22c",
+        [
+         null,
+         [
+          [
+           "/html/rendering/replaced-elements/the-select-element/select-text-decoration-ref.html",
+           "=="
+          ]
+         ],
+         {}
+        ]
        ]
       },
       "the-textarea-element": {
@@ -486570,6 +486583,10 @@
        "select-multiple-re-add-option-via-document-fragment-ref.html": [
         "cb66ddaaaf369479e59f6092d04633a2dc2baf6c",
         []
+       ],
+       "select-text-decoration-ref.html": [
+        "41a039e988f17a0e8af5ad474f82828c4b8534ea",
+        []
        ]
       },
       "the-textarea-element": {