Bug 1531: Use full path in FileTransferProgressEventArgs.FileName + FileTransferProgress unit tests

https://winscp.net/tracker/1531

Source commit: 8a7e12900392b03fbe388bcdd3cfa7a3b850991f

source/core/Script.cpp

@@ -2239,7 +2239,7 @@ void __fastcall TManagementScript::TerminalOperationProgress(
         TScriptProgress Progress;
         Progress.Operation = ProgressData.Operation;
         Progress.Side = ProgressData.Side;
-        Progress.FileName = ProgressData.FileName;
+        Progress.FileName = ProgressData.FullFileName;
         Progress.Directory = ProgressData.Directory;
         Progress.OverallProgress = ProgressData.OverallProgress();
         Progress.FileProgress = ProgressData.TransferProgress();