Makes PlatformInformationProvider aware of the browser default route … (#88122)

packages/flutter/test/widgets/route_notification_messages_test.dart

@@ -286,6 +286,15 @@ void main() {
       routerDelegate: delegate,
     ));
     expect(find.text('initial'), findsOneWidget);
+    expect(log, <Object>[
+      isMethodCall('selectMultiEntryHistory', arguments: null),
+      isMethodCall('routeInformationUpdated', arguments: <String, dynamic>{
+        'location': 'initial',
+        'state': null,
+        'replace': false,
+      }),
+    ]);
+    log.clear();
 
     // Triggers a router rebuild and verify the route information is reported
     // to the web engine.