gh-108634: PyInterpreterState_New() no longer calls Py_FatalError() (#108748)

pycore_create_interpreter() now returns a status, rather than
calling Py_FatalError().

* PyInterpreterState_New() now calls Py_ExitStatusException() instead
  of calling Py_FatalError() directly.
* Replace Py_FatalError() with PyStatus in init_interpreter() and
  _PyObject_InitState().
* _PyErr_SetFromPyStatus() now raises RuntimeError, instead of
  ValueError. It can now call PyErr_NoMemory(), raise MemoryError,
  if it detects _PyStatus_NO_MEMORY() error message.