To enhance censorship resistance and mitigate network partitioning risks, Dash Core now aims to maintain at least two
outbound onion connections and generally protects these connections from eviction. As a result of the low percentage
of gossiped addresses being onion nodes, it was often the case where, unless you specify onlynet=onion, a node
would rarely if ever establish any outbound onion connections. This change ensures that nodes which can access the
onion network maintain a few onion connections. As a result, network messages could continue to propagate across
the network even if non-onion IPv4 traffic is blocked, reducing the risk of partitioning. Additionally, this update improves
security by enabling p2p encryption for these peers. (#6147)