Establish baseline webdriver conformance results (#35024)

https://github.com/web-platform-tests/wpt/pull/50041 allows us to start
running the webdriver conformance tests in Servo, which will make it
easier for us to track regressions/improvements in our webdriver server
implementation.

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes are part of #15274
- [x] There are tests for these changes

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

tests/wpt/include.ini

@@ -278,10 +278,26 @@ skip: true
   skip: false
 [WebCryptoAPI]
   skip: false
+[webdriver]
+  skip: false
+  [tests]
+    skip: false
+    [bidi]
+      skip: true
+    [classic]
+      skip: true
+    [interop]
+      skip: true
 [webgl]
   skip: false
 [webidl]
   skip: false
+[webmessaging]
+  skip: false
+[websockets]
+  skip: false
+[webstorage]
+  skip: false
 [webvr]
   skip: false
 [webvtt]
@@ -292,12 +308,6 @@ skip: true
   skip: false
   [dom-overlay]
     skip: true
-[webmessaging]
-  skip: false
-[websockets]
-  skip: false
-[webstorage]
-  skip: false
 [workers]
   skip: false
   [modules]