[issue1284670] Allow to restrict ModuleFinder to get "direct" dependencies

[mike mcleod]

Change by mike mcleod <mikecmcleod at gmail.com>:


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pull_requests: +28450
pull_request: https://github.com/python/cpython/pull/30228

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue1284670>
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