Investigate into gapic references not being resolved properly

[dandhlee]

Googlers see b/206688371.

Not sure why these are not resolved:

client_info: google.api_core.gapic_v1.client_info.ClientInfo = <google.api_core.gapic_v1.client_info.ClientInfo object>

Source code example:

client_info: gapic_v1.client_info.ClientInfo = DEFAULT_CLIENT_INFO

perhaps it's because the reference is a constant from another module. Will investigate.

[dandhlee]

Unfortunately this problem isn't plugin specific, not necessarily Sphinx specific but the way that the code gets pulled through object.__repr__() which does not correctly evaluate the object representation in cases like above.

Current googleapis.dev docs are also showing this behavior, will have to investigate further to see what I can do to bring the correct representation back.