gh-130819: Update `tarfile.py#_create_gnu_long_header` to align with GNU Tar#130820

gdh1995 wants to merge 1 commit intopython:mainpython/cpython:mainfrom

gdh1995:fix_long_gnu_name_in_tarfilegdh1995/cpython:fix_long_gnu_name_in_tarfileCopy head branch name to clipboard