Onstart sync progressbar: changed default screen to channels

Because it's synchronization is faster and first in line

lib/screens/scanner_screen.dart

@@ -11,7 +11,7 @@ import '../utils/app_logger.dart';
 import '../widgets/adaptive_app_bar_title.dart';
 import '../widgets/device_tile.dart';
 import '../helpers/snack_bar_builder.dart';
-import 'contacts_screen.dart';
+import 'channels_screen.dart';
 import 'tcp_screen.dart';
 import 'usb_screen.dart';
 
@@ -46,7 +46,7 @@ class _ScannerScreenState extends State<ScannerScreen> {
         _changedNavigation = true;
         if (mounted) {
           Navigator.of(context).push(
-            MaterialPageRoute(builder: (context) => const ContactsScreen()),
+            MaterialPageRoute(builder: (context) => const ChannelsScreen()),
           );
         }
       }

lib/screens/tcp_screen.dart

@@ -9,7 +9,7 @@ import '../services/app_settings_service.dart';
 import '../utils/platform_info.dart';
 import '../widgets/adaptive_app_bar_title.dart';
 import '../helpers/snack_bar_builder.dart';
-import 'contacts_screen.dart';
+import 'channels_screen.dart';
 import 'usb_screen.dart';
 
 class TcpScreen extends StatefulWidget {
@@ -24,7 +24,7 @@ class _TcpScreenState extends State<TcpScreen> {
   late final TextEditingController _portController;
   late final MeshCoreConnector _connector;
   late final VoidCallback _connectionListener;
-  bool _navigatedToContacts = false;
+  bool _navigatedToChannels = false;
 
   @override
   void initState() {
@@ -42,20 +42,20 @@ class _TcpScreenState extends State<TcpScreen> {
     _connectionListener = () {
       if (!mounted) return;
       if (_connector.state == MeshCoreConnectionState.disconnected) {
-        _navigatedToContacts = false;
+        _navigatedToChannels = false;
       }
       if (_connector.state == MeshCoreConnectionState.connected &&
           _connector.isTcpTransportConnected &&
-          !_navigatedToContacts) {
+          !_navigatedToChannels) {
         context.read<AppSettingsService>().setTcpServerAddress(
           _hostController.text,
         );
         context.read<AppSettingsService>().setTcpServerPort(
           int.tryParse(_portController.text) ?? 0,
         );
-        _navigatedToContacts = true;
+        _navigatedToChannels = true;
         Navigator.of(context).pushReplacement(
-          MaterialPageRoute(builder: (_) => const ContactsScreen()),
+          MaterialPageRoute(builder: (_) => const ChannelsScreen()),
         );
       }
     };
@@ -67,7 +67,7 @@ class _TcpScreenState extends State<TcpScreen> {
     _hostController.dispose();
     _portController.dispose();
     _connector.removeListener(_connectionListener);
-    if (!_navigatedToContacts &&
+    if (!_navigatedToChannels &&
         _connector.activeTransport == MeshCoreTransportType.tcp &&
         _connector.state != MeshCoreConnectionState.disconnected) {
       WidgetsBinding.instance.addPostFrameCallback((_) {

lib/screens/usb_screen.dart

@@ -11,7 +11,7 @@ import '../utils/platform_info.dart';
 import '../utils/usb_port_labels.dart';
 import '../widgets/adaptive_app_bar_title.dart';
 import '../helpers/snack_bar_builder.dart';
-import 'contacts_screen.dart';
+import 'channels_screen.dart';
 import 'scanner_screen.dart';
 import 'tcp_screen.dart';
 
@@ -25,7 +25,7 @@ class UsbScreen extends StatefulWidget {
 class _UsbScreenState extends State<UsbScreen> {
   final List<String> _ports = <String>[];
   bool _isLoadingPorts = true;
-  bool _navigatedToContacts = false;
+  bool _navigatedToChannels = false;
   bool _didScheduleInitialLoad = false;
   Timer? _hotPlugTimer;
   late final MeshCoreConnector _connector;
@@ -41,14 +41,14 @@ class _UsbScreenState extends State<UsbScreen> {
     _connectionListener = () {
       if (!mounted) return;
       if (_connector.state == MeshCoreConnectionState.disconnected) {
-        _navigatedToContacts = false;
+        _navigatedToChannels = false;
       }
       if (_connector.state == MeshCoreConnectionState.connected &&
           _connector.isUsbTransportConnected &&
-          !_navigatedToContacts) {
-        _navigatedToContacts = true;
+          !_navigatedToChannels) {
+        _navigatedToChannels = true;
         Navigator.of(context).pushReplacement(
-          MaterialPageRoute(builder: (_) => const ContactsScreen()),
+          MaterialPageRoute(builder: (_) => const ChannelsScreen()),
         );
       }
     };
@@ -72,7 +72,7 @@ class _UsbScreenState extends State<UsbScreen> {
     _hotPlugTimer?.cancel();
     _hotPlugTimer = null;
     _connector.removeListener(_connectionListener);
-    if (!_navigatedToContacts &&
+    if (!_navigatedToChannels &&
         _connector.activeTransport == MeshCoreTransportType.usb &&
         _connector.state != MeshCoreConnectionState.disconnected) {
       WidgetsBinding.instance.addPostFrameCallback((_) {