Proposed new feature or change:

Version 1.25.1, Python 3.12.re02
After enabling interpreters in Python C Api:

PyInterpreterConfig config = {
.check_multi_interp_extensions = 1,
.gil = PyInterpreterConfig_OWN_GIL,
};
PyThreadState *tstate = NULL;
PyStatus status = Py_NewInterpreterFromConfig(&tstate, &config);
if (PyStatus_Exception(status)) {
return -1;
}

Import numpy throws an exception:
module numpy.core._multiarray._umath does not support loading in subinterpreters