TF-2118 Handle drop n drop file as attachment

(cherry picked from commit cb1f15dcba46a15dbd5c5a8493593854855be331)

lib/features/upload/domain/model/upload_attachment.dart

@@ -57,11 +57,15 @@ class UploadAttachment with EquatableMixin {
       if (attachment != null) {
         _updateEvent(Right(SuccessAttachmentUploadState(uploadTaskId, attachment, fileInfo)));
       } else {
-        _updateEvent(Left(ErrorAttachmentUploadState(uploadTaskId)));
+        _updateEvent(Left(ErrorAttachmentUploadState(uploadId: uploadTaskId)));
       }
     } catch (e) {
       logError('UploadAttachment::upload():ERROR: $e');
-      _updateEvent(Left(ErrorAttachmentUploadState(uploadTaskId)));
+      if (e is DioError && e.type == DioErrorType.cancel) {
+        _updateEvent(Left(CancelAttachmentUploadState(uploadTaskId)));
+      } else {
+        _updateEvent(Left(ErrorAttachmentUploadState(uploadId: uploadTaskId, exception: e)));
+      }
     } finally {
       await _progressStateController.close();
     }

lib/features/upload/domain/state/attachment_upload_state.dart

@@ -51,13 +51,16 @@ class SuccessAttachmentUploadState extends Success {
   ];
 }
 
-class ErrorAttachmentUploadState extends Failure {
+class ErrorAttachmentUploadState extends FeatureFailure {
   final UploadTaskId uploadId;
 
-  ErrorAttachmentUploadState(this.uploadId);
+  ErrorAttachmentUploadState({
+    required this.uploadId,
+    dynamic exception
+  }) : super(exception: exception);
 
   @override
-  List<Object?> get props => [uploadId];
+  List<Object?> get props => [uploadId, ...super.props];
 }
 
 class CancelAttachmentUploadState extends Failure {

lib/features/upload/presentation/controller/upload_controller.dart

@@ -258,7 +258,7 @@ class UploadController extends BaseController {
     if (currentContext != null && currentOverlayContext != null) {
       _appToast.showToastErrorMessage(
         currentOverlayContext!,
-        AppLocalizations.of(currentContext!).can_not_upload_this_file_as_attachments,
+        '${AppLocalizations.of(currentContext!).can_not_upload_this_file_as_attachments}. ${failure.exception ?? ''}',
         leadingSVGIconColor: Colors.white,
         leadingSVGIcon: _imagePaths.icAttachment);
     }