[3.13] gh-88375, gh-111788: Fix parsing errors and normalization in robotparser (GH-138502)#138549

serhiy-storchaka merged 2 commits intopython:3.13python/cpython:3.13from

miss-islington:backport-cb7ef18-3.13miss-islington/cpython:backport-cb7ef18-3.13Copy head branch name to clipboard