[3.14] gh-144085: Add `{gi,cr}_suspended` to `inspect` comments and `generator/coroutine` tests (GH-144086) (#144104)

gh-144085: Add `{gi,cr}_suspended` to `inspect` comments and `generator/coroutine` tests (GH-144086)
(cherry picked from commit 4ef30a5871db2043712945e64f33af81938d68dc)

Co-authored-by: Yongtao Huang <yongtaoh2022@gmail.com>