Switch to js_interop for web import configuration

engine/src/flutter/lib/web_ui/lib/src/engine/renderer.dart

diff --git a/engine/src/flutter/lib/web_ui/lib/src/engine/renderer.dart b/engine/src/flutter/lib/web_ui/lib/src/engine/renderer.dart
index c250457..f4f06d9 100644
--- a/engine/src/flutter/lib/web_ui/lib/src/engine/renderer.dart
+++ b/engine/src/flutter/lib/web_ui/lib/src/engine/renderer.dart
@@ -10,7 +10,7 @@
 import 'package:meta/meta.dart';
 import 'package:ui/src/engine.dart';
 import 'package:ui/src/engine/skwasm/skwasm_impl.dart'
-    if (dart.library.html) 'package:ui/src/engine/skwasm/skwasm_stub.dart';
+    if (dart.library.js_interop) 'package:ui/src/engine/skwasm/skwasm_stub.dart';
 import 'package:ui/ui.dart' as ui;
 import 'package:ui/ui_web/src/ui_web.dart' as ui_web;
 

engine/src/flutter/lib/web_ui/test/ui/utils.dart

diff --git a/engine/src/flutter/lib/web_ui/test/ui/utils.dart b/engine/src/flutter/lib/web_ui/test/ui/utils.dart
index 5527eda..43e8824 100644
--- a/engine/src/flutter/lib/web_ui/test/ui/utils.dart
+++ b/engine/src/flutter/lib/web_ui/test/ui/utils.dart
@@ -7,7 +7,7 @@
 
 import 'package:ui/src/engine.dart';
 import 'package:ui/src/engine/skwasm/skwasm_impl.dart'
-    if (dart.library.html) 'package:ui/src/engine/skwasm/skwasm_stub.dart';
+    if (dart.library.js_interop) 'package:ui/src/engine/skwasm/skwasm_stub.dart';
 import 'package:ui/ui.dart';
 
 import '../common/rendering.dart';