[8.0.x] Replace reorder-python-imports by isort due to black incompatibility (#11898)

Backport of #11896

testing/python/integration.py

@@ -42,9 +42,10 @@ class TestMockDecoration:
         assert values == ("x",)
 
     def test_getfuncargnames_patching(self):
-        from _pytest.compat import getfuncargnames
         from unittest.mock import patch
 
+        from _pytest.compat import getfuncargnames
+
         class T:
             def original(self, x, y, z):
                 pass