chore: remove isdesktop check

ui/lib/ffi/backend.dart

@@ -2,14 +2,14 @@ import 'dart:ffi';
 import 'dart:io';
 import 'dart:isolate';
 
-import 'package:ui/widgets/utils.dart' as Utils;
+import 'package:flutter/foundation.dart';
 
 
 class FFIBackend {
   final lib = DynamicLibrary.open(libname());
 
   static String libname() {
-    if (Utils.isDesktop()) {
+    if (!kIsWeb) {
       if (Platform.isWindows) {
         return 'libpolaris.dll';
       } else if (Platform.isLinux) {

ui/lib/widgets/utils.dart

@@ -55,10 +55,6 @@ extension FileFormatter on num {
   }
 }
 
-bool isDesktop() {
-  return Platform.isLinux || Platform.isWindows || Platform.isMacOS;
-}
-
   bool isSmallScreen(BuildContext context) {
     final screenWidth = MediaQuery.of(context).size.width;
     return screenWidth < Breakpoints.small.endWidth!.toDouble();