always wrap package lists (#77685)

This comes after wrap-and-sort changed behaviour on unwrapped lines
in devscripts 2.23.0:

  + Always apply a trailing comma when run with -t also when the field
  is not being wrapped. Closes: #989785; MR: !267

pre_commit_debian/__init__.py

@@ -24,7 +24,7 @@ def main():
     parser.add_argument('files', nargs=argparse.REMAINDER)
     args = parser.parse_args()
 
-    cmd = ['wrap-and-sort', '--keep-first', '--trailing-comma']
+    cmd = ['wrap-and-sort', '--wrap-always', '--keep-first', '--trailing-comma']
     for file in args.files:
         cmd.append('-f')
         cmd.append(file)