Fix USB permission receiver registration for compatibility with Android Tiramisu

android/app/src/main/kotlin/com/meshcore/meshcore_open/MainActivity.kt

@@ -147,7 +147,7 @@ class MainActivity : FlutterActivity() {
                 addAction(UsbManager.ACTION_USB_DEVICE_DETACHED)
             }
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-            registerReceiver(permissionReceiver, filter, RECEIVER_NOT_EXPORTED)
+            registerReceiver(permissionReceiver, filter, Context.RECEIVER_NOT_EXPORTED)
         } else {
             @Suppress("DEPRECATION")
             registerReceiver(permissionReceiver, filter)

lib/services/usb_serial_service_web.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:js_interop';
 import 'dart:js_interop_unsafe';
+import 'dart:typed_data';
 
 import 'package:flutter/foundation.dart';
 import 'package:web/web.dart' as web;