[3.13] gh-86682: Add versionadded for sys._getframemodulename (GH-136325) (#136376)

gh-86682: Add versionadded for sys._getframemodulename (GH-136325)

add versionadded for sys._getframemodulename
(cherry picked from commit 11f074b243756bca0db5a7d35dd84f00879de616)

Co-authored-by: Anthony Sottile <asottile@umich.edu>