Fix wasm tests.

The lock tests were being picked up twice: once in test_lock.py and once
in Test_testinternalcapi from test_misc.py. The Test_testinternalcapi
was not skipping tests when the platform doesn't have threads. This
moves the tests to test_misc.py, doesn't include them in
Test_testinternalcapi, and skips them if the platform doesn't support
threads.

Author: colesbury

Lib/test/test_capi/test_lock.py

@@ -2067,7 +2067,15 @@ def test_version_api_data(self):
 class Test_testinternalcapi(unittest.TestCase):
     locals().update((name, getattr(_testinternalcapi, name))
                     for name in dir(_testinternalcapi)
-                    if name.startswith('test_'))
+                    if name.startswith('test_')
+                    and not name.startswith('test_lock_'))
+
+
+@threading_helper.requires_working_threading()
+class Test_PyLock(unittest.TestCase):
+        locals().update((name, getattr(_testinternalcapi, name))
+                        for name in dir(_testinternalcapi)
+                        if name.startswith('test_lock_'))
 
 
 @unittest.skipIf(_testmultiphase is None, "test requires _testmultiphase module")