[3.13] gh-144085: Add {gi,cr}_suspended to inspect comments and generator/coroutine tests (GH-144086)

[hyongtao-code]

(cherry picked from commit 4ef30a5)

This backport resolves a docstring conflict in Lib/inspect.py by applying the minimal necessary change.

While an alternative would be to first cherry-pick gh-122059 and then gh-144086, this PR instead follows the minimal-change principle by directly adding the two missing attribute lines (gi_suspended and gi_yieldfrom) to the existing 3.13 docstring layout.

This approach avoids broader docstring reformatting and is consistent with prior guidance for stable branches, where docstring changes should be kept minimal (see discussion in gh-122059).

No behavioral changes; this backport is limited to documentation consistency with the already-merged tests.

• Issue: Missing gi_suspended coverage in inspect comments and generator/coroutine tests #144085

[hyongtao-code]

Hi @sobolevn , could you please help review this backport?
Please feel free to push any necessary changes if you feel this PR is not accurate enough.

[sobolevn]

Typeshed reference: https://github.com/python/typeshed/blob/a3568ac8d9be04e7a10a6453068f4970e42074d5/stdlib/types.pyi#L406-L410