chore(kad-dht): findPeerLocal to return undefined if no multiaddrs

[dozyio]

Description

Changes findPeerLocal so a peer with zero addresses is treated as a local miss.

• dial calls calculateMultiaddrs to resolve dialable addresses.
• When no addresses are available, calculateMultiaddrs throws NoValidAddressesError.
• Previously, peer routing could return a local "hit" with empty addresses, so calculateMultiaddrs ended empty.
• This change makes addressless local peers a cache miss in findPeerLocal, allowing a network lookup to repopulate addresses before calculateMultiaddrs gives up.

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if necessary (this includes comments as well)
• I have added tests that prove my fix is effective or that my feature works