Enable dom_svg_enabled on all tests (#36475)

This feature is part of --enable-experimental-web-platform-features, so
it should be enabled on all tests.

This causes some new failures, but mostly it's because the tests were
timing out instead of running the failing subtests.

This is part of #36315

Signed-off-by: Oriol Brufau <obrufau@igalia.com>

tests/wpt/mozilla/meta/MANIFEST.json

@@ -13503,7 +13503,7 @@
      ]
     ],
     "interfaces.https.html": [
-     "cc6e99d8da7cd82edefd1c0b0fce984ae85462de",
+     "fbbffae39a346f592fabfe5ad3d943936a51c868",
      [
       null,
       {}

tests/wpt/mozilla/meta/__dir__.ini

@@ -1 +1,13 @@
-prefs: ["dom_imagebitmap_enabled:true", "dom_offscreen_canvas_enabled:true", "dom_xpath_enabled:true", "dom_intersection_observer_enabled:true", "dom_resize_observer_enabled:true", "dom_notification_enabled:true", "dom_fontface_enabled:true", "dom_urlpattern_enabled:true", "dom_serviceworker_enabled:true", "dom_async_clipboard_enabled:true"]
+prefs: [
+  "dom_async_clipboard_enabled:true",
+  "dom_fontface_enabled:true",
+  "dom_imagebitmap_enabled:true",
+  "dom_intersection_observer_enabled:true",
+  "dom_notification_enabled:true",
+  "dom_offscreen_canvas_enabled:true",
+  "dom_resize_observer_enabled:true",
+  "dom_serviceworker_enabled:true",
+  "dom_svg_enabled:true",
+  "dom_urlpattern_enabled:true",
+  "dom_xpath_enabled:true",
+]

tests/wpt/mozilla/tests/mozilla/interfaces.https.html

@@ -271,7 +271,10 @@ test_interfaces([
   "StyleSheetList",
   "SubmitEvent",
   "SubtleCrypto",
+  "SVGElement",
+  "SVGGraphicsElement",
   "SVGRect",
+  "SVGSVGElement",
   "Text",
   "TextTrack",
   "TextTrackCue",