Bug 1626526 - [remote] Don't emit internal network request events for invalid top frame elements. r=remote-protocol-reviewers,maja_zf

Differential Revision: https://phabricator.services.mozilla.com/D69194

--HG--
extra : moz-landing-system : lando

remote/domains/parent/network/NetworkObserver.jsm

@@ -246,7 +246,8 @@ class NetworkObserver {
     const loadContext = getLoadContext(httpChannel);
     if (
       !loadContext ||
-      !this._browserSessionCount.has(loadContext.topFrameElement)
+      !this._browserSessionCount.has(loadContext.topFrameElement) ||
+      !loadContext.topFrameElement.currentURI
     ) {
       return;
     }