This is useful in a lot of cases, especially when a proof expires.
Especially acute in the test environment where many proofs may have the same
expiry for convenience. I learned the hard way that proofs unexpectedly
expiring leads to no other clues in the logs other than simply not polling.
[../src/avalanche/peermanager.cpp:501] [updatedBlockTip] Peer proof 37011d056427f4639c80dc3df324fcfe26d98f8ffb6b12a016d52a6d37e9d0ef verification failed (expired-proof)