TF-825 Download email as EML file (#2854)

lib/features/email/domain/usecases/download_attachment_for_web_interactor.dart

@@ -72,7 +72,7 @@ class DownloadAttachmentForWebInteractor {
     } catch (exception) {
       yield Left<Failure, Success>(
         DownloadAttachmentForWebFailure(
-          attachmentBlobId: attachment.blobId,
+          attachment: attachment,
           taskId: taskId,
           exception: exception
         )

lib/features/email/domain/usecases/view_attachment_for_web_interactor.dart

@@ -34,7 +34,7 @@ class ViewAttachmentForWebInteractor {
               (failure) {
                 if (failure is DownloadAttachmentForWebFailure) {
                   return Left(ViewAttachmentForWebFailure(
-                    attachmentBlobId: attachment.blobId,
+                    attachment: attachment,
                     taskId: failure.taskId,
                     exception: failure.exception,
                   ));