gh-91051: allow setting a callback hook on PyType_Modified (GH-97875)

Doc/c-api/type.rst

Doc/whatsnew/3.12.rst

Include/cpython/object.h

Include/internal/pycore_interp.h

Lib/test/test_capi.py

Lib/test/test_sys.py

.../next/C API/2022-10-05-10-43-32.gh-issue-91051.ODDRsQ.rst

Modules/_testcapimodule.c

Objects/typeobject.c