[Gardening]: imported/w3c/web-platform-tests/webrtc-stats/supported-s…

…tats.https.html is flacky

https://bugs.webkit.org/show_bug.cgi?id=263044
rdar://116833863

Unreviewed test gardening.

Adding test expectation

* LayoutTests/platform/ios-wk2/TestExpectations:

Canonical link: https://commits.webkit.org/273685@main

LayoutTests/platform/ios-wk2/TestExpectations

@@ -2360,3 +2360,5 @@ webkit.org/b/267974 fast/forms/ios/dismiss-date-picker-on-rotation.html [ Pass T
 webkit.org/b/268044 [ Debug ] ipc/shared-video-frame-size.html [ Crash ]
 
 webkit.org/b/268305 imported/w3c/web-platform-tests/mathml/relations/html5-tree/dynamic-childlist-002.html [ Failure ]
+
+webkit.org/b/263044 [ Debug ] imported/w3c/web-platform-tests/webrtc-stats/supported-stats.https.html [ Pass Failure ]