fix: set initial pslabVersionID to localized value in constructor

Per Sourcery review feedback, initialize pslabVersionID to
appLocalizations.notConnected in the constructor so the default
UI state is explicit and consistent with the localized value.
Also applied Linux dart format style.

Author: prajakta128

lib/providers/board_state_provider.dart

@@ -29,6 +29,7 @@ class BoardStateProvider extends ChangeNotifier {
   BoardStateProvider() {
     scienceLabCommon = getIt.get<ScienceLabCommon>();
     configProvider = SettingsConfigProvider();
+    pslabVersionID = appLocalizations.notConnected;
   }
 
   Future<void> initialize() async {
@@ -120,4 +121,4 @@ class BoardStateProvider extends ChangeNotifier {
     }
     return false;
   }
-}
+}