Fix bug in ddrescue-tui argument parsing

scripts/wk/clone/ddrescue.py

@@ -67,8 +67,8 @@ def argparse_helper() -> dict[str, None|bool|str]:
   )
   args = parser.parse_args()
   legacy_args = {
-    'clone': False if args.clone is None else args.clone,
-    'image': False if args.image is None else args.image,
+    'clone': args.mode == 'clone',
+    'image': args.mode == 'image',
     '<source>': args.source,
     '<destination>': args.destination,
     '--dry-run': args.dry_run,