[3.13] gh-79846: Make ssl.create_default_context() ignore invalid certificates (GH-91740) (#122768)

gh-79846: Make ssl.create_default_context() ignore invalid certificates (GH-91740)

An error in one certificate should not cause the whole thing to fail.

(cherry picked from commit 9e551f9b351440ebae79e07a02d0e4a1b61d139e)

Co-authored-by: pukkandan <pukkandan.ytdlp@gmail.com>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>