Refactor contact handling and other improvments (#317)

* Refactor contact filtering and improve localization strings; enhance path trace handling

* Add localization for new CLI commands and update existing strings

* Enhance contact handling and UI updates across multiple screens
add unfiltered contact access and improve last seen resolution

* Add polling interval configuration and improve contact handling

* Reorder command constants for better organization and clarity

* Refactor contact handling by removing unnecessary mapping and improving clarity across multiple screens

* Moved RadioStatsIconButton in chat screen for improved UI consistency

* Added indicators to AppBar for channels

* Ignore contacts with self public key in contact handling

* Simplify path removal logic and clean up unused imports in path management dialog

* Enhance path hop resolution by adding distance checks to improve candidate selection accuracy

* Remove unnecessary reset of radio stats poll reference count in polling interval setter

lib/widgets/repeater_login_dialog.dart

@@ -113,7 +113,7 @@ class _RepeaterLoginDialogState extends State<RepeaterLoginDialog> {
         messageBytes: responseBytes,
       );
       final timeoutSeconds = (timeoutMs / 1000).ceil();
-      final timeout = Duration(milliseconds: timeoutMs);
+      final timeout = Duration(milliseconds: timeoutMs + 2000);
       final selectionLabel = selection.useFlood
           ? 'flood'
           : '${selection.hopCount} hops';

lib/widgets/room_login_dialog.dart

@@ -108,7 +108,7 @@ class _RoomLoginDialogState extends State<RoomLoginDialog> {
         messageBytes: responseBytes,
       );
       final timeoutSeconds = (timeoutMs / 1000).ceil();
-      final timeout = Duration(milliseconds: timeoutMs);
+      final timeout = Duration(milliseconds: timeoutMs + 2000);
       final selectionLabel = selection.useFlood
           ? 'flood'
           : '${selection.hopCount} hops';