[3.13] gh-128481: Improve documentation for `traceback.FrameSummary` (GH-128484) (#130753)

* gh-128481: Improve documentation for `traceback.FrameSummary` (GH-128484)

Complete the `traceback.FrameSummary` signature and add missing
documentation for the `colno` and `end_{col,line}no` attributes.
(cherry picked from commit 051f0e5683fec3840fa7fc99723741dd2d701eae)

Co-authored-by: Damien <81557462+Damien-Chen@users.noreply.github.com>