fix ticker provider not being set when controller arg to LazyCanvas changed

lib/core/render.dart

@@ -32,6 +32,14 @@ class _LazyCanvasState extends State<LazyCanvas> with TickerProviderStateMixin<L
     super.dispose();
   }
 
+  @override
+  void didUpdateWidget(covariant LazyCanvas oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.controller != widget.controller) {
+      widget.controller.setTickerProvider(this);
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     widget.controller.setBuildContext(context);