Bug 1673532 - set a step of fontface-override-descriptor-getter-setter.sub.html.ini as intermittent on Windows x64. DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D94873

testing/web-platform/meta/css/css-font-loading/fontface-override-descriptor-getter-setter.sub.html.ini

@@ -67,7 +67,7 @@
   [Initialize lineGapOverride with a non-percentage should fail]
     expected:
       if (os == "win") and ccov: [PASS, NOTRUN]
-      if (os == "win") and debug and not webrender and (processor == "x86_64"): NOTRUN
+      if (os == "win") and debug and not webrender and (processor == "x86_64"): ["TIMEOUT", "NOTRUN"]
       if (os == "win") and debug and not webrender and (processor == "x86"): ["FAIL", "NOTRUN"]
       if (os == "win") and not debug and webrender and not fission: ["TIMEOUT", "FAIL"]
       if (os == "win") and not debug and webrender and fission: ["TIMEOUT", "FAIL"]