Bug 1528274 [wpt PR 15418] - Update wpt metadata, a=testonly

wpt-pr: 15418
wpt-type: metadata

testing/web-platform/meta/client-hints/sec-ch-ua.https.html.ini

@@ -0,0 +1,7 @@
+[sec-ch-ua.https.html]
+  [Open HTTPS window post-opt-in: `Sec-CH-UA` header with minor version.]
+    expected: FAIL
+
+  [Open HTTPS window prior to opt-in: `Sec-CH-UA` header with minor version.]
+    expected: FAIL
+