address review: merge news

Author: skirpichev

Misc/NEWS.d/next/C_API/2025-07-31-04-30-42.gh-issue-128813.opL-Pv.rst

@@ -1,4 +1,5 @@
 Functions :c:func:`_Py_c_sum`, :c:func:`_Py_c_diff`, :c:func:`_Py_c_neg`,
-:c:func:`_Py_c_prod`, :c:func:`_Py_c_quot`, :c:func:`_Py_c_pow` and
-previously undocumented :c:func:`_Py_c_abs` are :term:`soft deprecated`.
+:c:func:`_Py_c_prod`, :c:func:`_Py_c_quot`, :c:func:`_Py_c_pow` and previously
+undocumented :c:func:`_Py_c_abs` are :term:`soft deprecated`.  Deprecate also
+:c:member:`~PyComplexObject.cval` field of the :c:type:`PyComplexObject` type.
 Patch by Sergey B Kirpichev.