fix: Report if a request to check peer status in test_network fails

[DCNick3]

Description

Warn if a peer status request is failed. Helped me debug my misconfigured proxy failing tests when ran in IDE...

This also refactors a function a bit, because IMO it was a bit hard to read with the fold and map_or

Linked issue

Closes #4542

Benefits

+ Easier debugging if something went wrong with requests - Can introduce log noise, but shouldn't happen if the actual connection to the node is OK

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