[3.13] gh-115649: Copy the filename into main interpreter before intern in import.c (GH-120315) (#120652)

gh-115649: Copy the filename into main interpreter before intern in import.c (GH-120315)
(cherry picked from commit 28140d1f2da1766bfbb83f58779f15255c73c871)

Co-authored-by: AN Long <aisk@users.noreply.github.com>
Co-authored-by: Kumar Aditya <kumaraditya@python.org>