UI: Use vertical file list for "Recover Auto Save"

Pablo and William agreed that the main purpose of the layout should be
to list files in a way that it's easy see which files were
created/modified when. Previously it was set to "Long List" to show the
modification time, now the vertical list is much better suited. The time
is shown anyway.

source/blender/windowmanager/intern/wm_files.c

@@ -2515,7 +2515,7 @@ void WM_OT_recover_auto_save(wmOperatorType *ot)
                                  FILE_BLENDER,
                                  FILE_OPENFILE,
                                  WM_FILESEL_FILEPATH,
-                                 FILE_HORIZONTALDISPLAY,
+                                 FILE_VERTICALDISPLAY,
                                  FILE_SORT_TIME);
 }