Backed out 4 changesets (bug 1948254) for causing wpt & hazard failures @ Navigation.cpp / NavigateEvent CLOSED TREE

Backed out changeset f5ad49e89bc3 (bug 1948254)
Backed out changeset 640382d73264 (bug 1948254)
Backed out changeset a79c8bef5dc3 (bug 1948254)
Backed out changeset 4a26e79ce32e (bug 1948254)

docshell/base/nsDocShell.cpp

@@ -11353,20 +11353,6 @@ nsDocShell::AddState(JS::Handle<JS::Value> aData, const nsAString& aTitle,
 
   }  // end of same-origin check
 
-  // https://html.spec.whatwg.org/#shared-history-push/replace-state-steps
-  // Step 8
-  if (nsCOMPtr<nsPIDOMWindowInner> window = document->GetInnerWindow()) {
-    if (RefPtr<Navigation> navigation = window->Navigation();
-        navigation &&
-        navigation->FirePushReplaceReloadNavigateEvent(
-            aReplace ? NavigationType::Replace : NavigationType::Push, newURI,
-            /* aIsSameDocument */ true, /* aUserInvolvement */ Nothing(),
-            /* aSourceElement */ nullptr, /* aFormDataEntryList */ Nothing(),
-            /* aNavigationAPIState */ nullptr, scContainer)) {
-      return NS_OK;
-    }
-  }
-
   // Step 8: call "URL and history update steps"
   rv = UpdateURLAndHistory(document, newURI, scContainer,
                            aReplace ? NavigationHistoryBehavior::Replace