Bug 1565116 - update appearance-searchfield-001.html expectancy r=jmaher

Differential Revision: https://phabricator.services.mozilla.com/D54441

--HG--
extra : moz-landing-system : lando

testing/web-platform/meta/css/css-ui/appearance-searchfield-001.html.ini

@@ -2,7 +2,7 @@
   disabled:
     if debug and os == "win" and version == "6.1.7601": https://bugzilla.mozilla.org/show_bug.cgi?id=1560360
   expected:
-    if (os == "win") and debug and (processor == "x86_64"): FAIL
+    if (os == "win") and debug and (processor == "x86_64"): ["FAIL", "PASS"]
     if (os == "win") and not debug: FAIL
     if os == "win": FAIL