Add null-safety for list props with type dynamic

lib/features/thread/domain/state/empty_trash_folder_state.dart

@@ -19,5 +19,5 @@ class EmptyTrashFolderFailure extends FeatureFailure {
   EmptyTrashFolderFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/thread/domain/state/get_all_email_state.dart

@@ -18,5 +18,5 @@ class GetAllEmailFailure extends FeatureFailure {
   GetAllEmailFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/thread/domain/state/get_email_by_id_state.dart

@@ -19,5 +19,5 @@ class GetEmailByIdFailure extends FeatureFailure {
   GetEmailByIdFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/thread/domain/state/load_more_emails_state.dart

@@ -16,5 +16,5 @@ class LoadMoreEmailsFailure extends FeatureFailure {
   LoadMoreEmailsFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/thread/domain/state/mark_as_multiple_email_read_state.dart

@@ -55,5 +55,5 @@ class MarkAsMultipleEmailReadFailure extends FeatureFailure {
   MarkAsMultipleEmailReadFailure(this.exception, this.readActions);
 
   @override
-  List<Object> get props => [exception, readActions];
+  List<Object?> get props => [exception, readActions];
 }

lib/features/thread/domain/state/mark_as_star_multiple_email_state.dart

@@ -55,5 +55,5 @@ class MarkAsStarMultipleEmailFailure extends FeatureFailure {
   MarkAsStarMultipleEmailFailure(this.exception, this.markStarAction);
 
   @override
-  List<Object> get props => [exception, markStarAction];
+  List<Object?> get props => [exception, markStarAction];
 }

lib/features/thread/domain/state/move_multiple_email_to_mailbox_state.dart

@@ -90,5 +90,5 @@ class MoveMultipleEmailToMailboxFailure extends FeatureFailure {
   MoveMultipleEmailToMailboxFailure(this.exception, this.emailActionType, this.moveAction);
 
   @override
-  List<Object> get props => [exception, emailActionType, moveAction];
+  List<Object?> get props => [exception, emailActionType, moveAction];
 }

lib/features/thread/domain/state/refresh_changes_all_email_state.dart

@@ -18,5 +18,5 @@ class RefreshChangesAllEmailFailure extends FeatureFailure {
   RefreshChangesAllEmailFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/thread/domain/state/search_email_state.dart

@@ -25,5 +25,5 @@ class SearchEmailFailure extends FeatureFailure {
   SearchEmailFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }

lib/features/thread/domain/state/search_more_email_state.dart

@@ -26,5 +26,5 @@ class SearchMoreEmailFailure extends FeatureFailure {
   SearchMoreEmailFailure(this.exception);
 
   @override
-  List<Object> get props => [exception];
+  List<Object?> get props => [exception];
 }