Bug 1509506 [wpt PR 14204] - Expect empty string as default instead of OK, a=testonly

Automatic update from web-platform-testsFetch: expect empty string as default instead of OK

Follow-up to 99e9e996267ccd5c1344b7d0164c5e5763b3b174.
--

wpt-commits: bf2bef64b0056d8641ba1caf65315fa28221add9
wpt-pr: 14204

testing/web-platform/tests/fetch/api/response/response-clone.html

@@ -15,7 +15,7 @@
                             "url" : "",
                             "ok" : true,
                             "status" : 200,
-                            "statusText" : "OK"
+                            "statusText" : ""
       };
 
       var response = new Response();