[3.12] gh-105603: Change the PyInterpreterConfig.own gil Field (gh-105620) (gh-105731)

We are changing it to be more flexible that a strict bool can be for possible future expanded used cases.
(cherry picked from commit b97e14a806477af4225777d215ac38c0d9b845f0)

Co-authored-by: Eric Snow <ericsnowcurrently@gmail.com>