Add null-safety for list props with type dynamic

lib/features/cleanup/domain/state/cleanup_email_cache_state.dart

@@ -9,10 +9,10 @@ class CleanupEmailCacheSuccess extends UIState {
 }
 
 class CleanupEmailCacheFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   CleanupEmailCacheFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/cleanup/domain/state/cleanup_recent_login_url_cache_state.dart

@@ -14,5 +14,5 @@ class CleanupRecentLoginUrlCacheFailure extends FeatureFailure {
   CleanupRecentLoginUrlCacheFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/cleanup/domain/state/cleanup_recent_login_username_cache_state.dart

@@ -14,5 +14,5 @@ class CleanupRecentLoginUsernameCacheFailure extends FeatureFailure {
   CleanupRecentLoginUsernameCacheFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/cleanup/domain/state/cleanup_recent_search_cache_state.dart

@@ -14,5 +14,5 @@ class CleanupRecentSearchCacheFailure extends FeatureFailure {
   CleanupRecentSearchCacheFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }