refactor(bloc_observer): simplify state change logging

- Reduce state information string length limit from 250 to 150 characters
- Remove status property check and related logic
- Simplify variable declarations using final instead of var

Author: fulleni

lib/bloc_observer.dart

@@ -15,39 +15,16 @@ class AppBlocObserver extends BlocObserver {
 
     // Initialize state information strings.
     // By default, truncate the full string representation of the state
-    // to the first 250 characters to prevent excessively long logs.
-    var oldStateInfo = oldState.toString().substring(
+    // to the first 150 characters to prevent excessively long logs.
+    final oldStateInfo = oldState.toString().substring(
       0,
-      oldState.toString().length > 250 ? 250 : oldState.toString().length,
+      oldState.toString().length > 150 ? 150 : oldState.toString().length,
     );
-    var newStateInfo = newState.toString().substring(
+    final newStateInfo = newState.toString().substring(
       0,
-      newState.toString().length > 250 ? 250 : newState.toString().length,
+      newState.toString().length > 150 ? 150 : newState.toString().length,
     );
 
-    try {
-      // Attempt to access a 'status' property on the state objects.
-      // Many BLoC states use a 'status' property (e.g., Loading, Success, Failure)
-      // to represent their current lifecycle phase. If this property exists
-      // and is not null, prioritize logging its value for conciseness.
-      if (oldState.status != null) {
-        oldStateInfo = 'status: ${oldState.status}';
-      }
-      if (newState.status != null) {
-        newStateInfo = 'status: ${newState.status}';
-      }
-    } catch (e) {
-      // This catch block handles cases where:
-      // 1. The 'status' property does not exist on the state object (NoSuchMethodError).
-      // 2. Accessing 'status' throws any other runtime error.
-      // In such scenarios, the `oldStateInfo` and `newStateInfo` variables
-      // will retain their initially truncated string representations,
-      // providing a fallback for states without a 'status' property.
-      // Log the error for debugging purposes, but do not rethrow to avoid
-      // crashing the observer.
-      log('Error accessing status property for ${bloc.runtimeType}: $e');
-    }
-
     // Log the state change, including the BLoC type and the old and new state information.
     log('onChange(${bloc.runtimeType}, $oldStateInfo -> $newStateInfo)');
   }