[3.13] gh-126483: disable warnings filters mutation in concurrent test (GH-132694) #135132
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The
test_ssl_in_multiple_threadstest failed becausetest_check_hostname_idn()modified the global warnings filters via
warnings_helper.check_no_resource_warning().Only check for warnings when the context aware warnings feature is enabled, which makes
the warnings filter context-local and thread-safe.
(cherry picked from commit 40c8be0)
Co-authored-by: Thomas Grainger [email protected]