Bug 1503351 [wpt PR 13788] - Update wpt metadata, a=testonly

wpt-pr: 13788
wpt-type: metadata

testing/web-platform/meta/webrtc/RTCPeerConnection-connectionState.html.ini

@@ -1,7 +1,14 @@
 [RTCPeerConnection-connectionState.html]
+  expected: TIMEOUT
   [Initial connectionState should be new]
     expected: FAIL
 
   [connection with one data channel should eventually have connected connection state]
+    expected: TIMEOUT
+
+  [connection with one data channel should eventually have transports in connected state]
+    expected: TIMEOUT
+
+  [Closing the connection should set connectionState to closed]
     expected: FAIL