Incorrectly turned an import into a cimport in a cython 3 pure python file

[jtoledo1974]

With the current version of cython it is possible to use valid python syntax to do what used to need a cimport statement.

So isort turns

import cython
from cython.cimports.libc import math


def use_libc_math():
    return math.ceil(5.5)

into

import cython

from cython.cimports.libc cimport math


def use_libc_math():
    return math.ceil(5.5)

The resulting file cannot be run by the python interpreter, breaks tests and breaks the cython compilation

(venv311) C:\Users\Juan\cruji-enaire>cython -a test.py
C:\Users\Juan\venv311\Lib\site-packages\Cython\Compiler\Main.py:345: FutureWarning: Cython directive 'language_level' not set, using '3str' for now (Py3). This has changed from earlier releases! File: C:\Users\Juan\cruji-enaire\test.py
  tree = Parsing.p_module(s, pxd, full_module_name)

Error compiling Cython file:
------------------------------------------------------------
...
import cython

from cython.cimports.libc cimport math
                          ^
------------------------------------------------------------

test.py:3:26: Expected 'import' or 'cimport'

isort should be able to recognize the new from cython.cimports syntax and don't turn the import into a cimport.