Bug 1500225 [wpt PR 13603] - Update wpt metadata, a=testonly

wpt-pr: 13603
wpt-type: metadata

testing/web-platform/meta/background-fetch/fetch.https.window.js.ini

@@ -41,3 +41,9 @@
   [Registration object gets updated values when a background fetch completes.]
     expected: FAIL
 
+  [Matching to a single request should work]
+    expected: FAIL
+
+  [Matching to a non-existing request should work]
+    expected: FAIL
+