Deprecation: Switch default for FF_GIT_URLS_WITHOUT_TOKENS to true

upstream mr title: Deprecation: Switch default for FF_GIT_URLS_WITHOUT_TOKENS to true

upstream mr link: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179016

upstream mr target branch: master

upstream mr milestone: 17.9

upstream mr merged at: 2025-02-19 13:27:02 +0800