gh-129824: Temporarily skip InterpreterPoolMixin tests under TSAN (gh-129826)

There are multiple data races reported when running the
InterpreterPoolMixin tests, but it's still useful to run the other
test_concurrent_futures tests under TSAN.

Add test_concurrent_futures to the TSAN test suite.

Author: colesbury

Lib/test/libregrtest/tsan.py

@@ -6,6 +6,7 @@
     'test_capi.test_mem',
     'test_capi.test_pyatomic',
     'test_code',
+    'test_concurrent_futures',
     'test_enum',
     'test_functools',
     'test_httpservers',

Lib/test/test_concurrent_futures/util.py

@@ -74,6 +74,7 @@ class ThreadPoolMixin(ExecutorMixin):
     executor_type = futures.ThreadPoolExecutor
 
 
+@support.skip_if_sanitizer("gh-129824: data races in InterpreterPool tests", thread=True)
 class InterpreterPoolMixin(ExecutorMixin):
     executor_type = futures.InterpreterPoolExecutor