uninstrumented functions may be called

If application code saves a reference to function when the code is imported, a call to that function won't generate any events in the recording.

For example, with this definition

def free_method():
    return "free method"

def Example:
    static_method = staticmethod(partial(free_method))

Example.static_method()

no events for the call to free_method will be recorded. This is because instrumentation of free_method happens after the module is loaded, and so after the call to partial(free_method)) has saved the reference to free_method.

Use the Python reproducer in the issue as the starting point, then trace when instrumentation is applied relative to references saved by partial and staticmethod. Done means calls through those saved references generate events in the recording, with the reproducer covered by a regression test.