(web) don't hardcore 60fps timer on web

thermion_flutter/thermion_flutter/lib/src/widgets/src/thermion_widget_web_impl.dart

@@ -1,4 +1,3 @@
-import 'dart:async';
 import 'dart:ui' as ui;
 import 'dart:ui_web' as ui_web;
 import 'package:flutter/material.dart';
@@ -39,12 +38,12 @@ class _ThermionWidgetWebState extends State<ThermionWidgetWeb> {
 
       var elapsed = DateTime.now().microsecondsSinceEpoch -
           lastRender.microsecondsSinceEpoch;
-      // if (elapsed > 1667) {
+
       lastRender = DateTime.now();
       if (widget.viewer.rendering) {
         await FilamentApp.instance!.requestFrame();
       }
-      // }
+
       stackPtr = stackSave();
       _requestFrame();
     });
@@ -78,7 +77,6 @@ class _PlatformView extends StatefulWidget {
 }
 
 class _PlatformViewState extends State<_PlatformView> {
-  
   void initState() {
     super.initState();
     ui_web.platformViewRegistry.registerViewFactory(