[testing] Add test owner labels for some cuda? tests (#163296)

I am trying to give some test files better owner labels than `module: unknown`.  I am not sure them, but they seem pretty reasonable

Pull Request resolved: https://github.com/pytorch/pytorch/pull/163296
Approved by: https://github.com/eqy, https://github.com/msaroufim

test/test_kernel_launch_checks.py

@@ -1,4 +1,4 @@
-# Owner(s): ["module: unknown"]
+# Owner(s): ["module: cuda"]
 
 from torch.testing._internal.common_utils import TestCase, run_tests
 from torch.testing._internal.check_kernel_launches import (

test/test_numba_integration.py

@@ -1,4 +1,4 @@
-# Owner(s): ["module: unknown"]
+# Owner(s): ["module: cuda"]
 
 import unittest