[3.12] gh-127217: Fix pathname2url() for paths starting with multiple slashes on Posix (GH-127218)#127231

serhiy-storchaka merged 1 commit intopython:3.12python/cpython:3.12from

miss-islington:backport-97b2cea-3.12miss-islington/cpython:backport-97b2cea-3.12Copy head branch name to clipboard