Enable flet_datatable2 extension and update dependencies

Uncommented and enabled flet_datatable2 in main.dart and pubspec.yaml, switching its git ref to 'main'. Updated several other Flet package refs from 'v1' to 'main' and bumped various dependency versions in pubspec.lock for compatibility with Dart >=3.8.0.

Author: FeodorFitsner

client/lib/main.dart

@@ -6,7 +6,7 @@ import 'package:flet_audio/flet_audio.dart' as flet_audio;
 import 'package:flet_audio_recorder/flet_audio_recorder.dart'
     as flet_audio_recorder;
 import 'package:flet_charts/flet_charts.dart' as flet_charts;
-//import 'package:flet_datatable2/flet_datatable2.dart' as flet_datatable2;
+import 'package:flet_datatable2/flet_datatable2.dart' as flet_datatable2;
 import "package:flet_flashlight/flet_flashlight.dart" as flet_flashlight;
 import 'package:flet_geolocator/flet_geolocator.dart' as flet_geolocator;
 import 'package:flet_lottie/flet_lottie.dart' as flet_lottie;
@@ -27,10 +27,10 @@ const bool isProduction = bool.fromEnvironment('dart.vm.product');
 Tester? tester;
 
 void main([List<String>? args]) async {
-  // if (isProduction) {
-  //   // ignore: avoid_returning_null_for_void
-  //   debugPrint = (String? message, {int? wrapWidth}) => null;
-  // }
+  if (isProduction) {
+    // ignore: avoid_returning_null_for_void
+    debugPrint = (String? message, {int? wrapWidth}) => null;
+  }
 
   await setupDesktop();
 
@@ -45,7 +45,7 @@ void main([List<String>? args]) async {
     flet_rive.Extension(),
     flet_webview.Extension(),
     flet_flashlight.Extension(),
-    //flet_datatable2.Extension(),
+    flet_datatable2.Extension(),
     flet_charts.Extension(),
   ];