[static][3.8 -> 3.10] use test.support.import_helper.import_module di…

…rectly

Summary: The alias was removed in python/cpython#21771.

Test Plan: `sandcastle`

Reviewers: emacs, #cinder_porting, #staticpython

Reviewed By: emacs

Subscribers: jbiesnecker, dominik, orvid

Differential Revision: https://phabricator.intern.facebook.com/D38540106

Tags: lintBounce, cinder-310-exclusive

Lib/test/test_compiler/test_static/patch.py

@@ -3,7 +3,7 @@
 from compiler.pycodegen import PythonCodeGenerator
 from unittest.mock import Mock, patch
 
-from test.support import import_module
+from test.support.import_helper import import_module
 
 from .common import StaticTestBase