gh-94949: Disallow parsing parenthesised ctx mgr with old feature_version (GH-94950)

* gh-94949: Disallow parsing parenthesised ctx manager with old feature_version

* 📜🤖 Added by blurb_it.

* Allow it with feature_version=(3, 9) as well

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
(cherry picked from commit 0daba822212cd5d6c63384a27f390f0945330c2b)

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>