Fix get export is executed while auto dropping is not finished yet (#17435)

Author: stanislav-shchetinin

ydb/core/tx/schemeshard/schemeshard_export.cpp

@@ -110,7 +110,8 @@ void TSchemeShard::FromXxportInfo(NKikimrExport::TExport& exprt, const TExportIn
             ? Ydb::Export::ExportProgress::PROGRESS_DONE
             : Ydb::Export::ExportProgress::PROGRESS_TRANSFER_DATA);
         break;
-
+    
+    case TExportInfo::EState::AutoDropping:
     case TExportInfo::EState::Dropping:
         exprt.SetProgress(Ydb::Export::ExportProgress::PROGRESS_DONE);
         break;