[3.13] gh-130941: Fix `configparser` parsing values with `allow_no_value` and `interpolation` set (GH-130949) (#132588)

gh-130941: Fix `configparser` parsing values with `allow_no_value` and `interpolation` set (GH-130949)
(cherry picked from commit c35c7353eb8fbccff2d3a6ab664426b31af00d4d)

Co-authored-by: sobolevn <mail@sobolevn.me>