feat(peer): add dial readiness modes for fanout-backed pubsub

[marcus-pousette]

Summary

• add dial readiness options so callers can choose connection-only, services, or services-and-fanout semantics
• make default dial readiness include fanout neighbor readiness when fanout-backed pubsub is present
• wire timeout/signal through service wait paths
• add connect regression tests for default fanout wait, skip fanout wait, and connection-only readiness

Validation

• node ./node_modules/aegir/src/index.js run test --roots ./packages/clients/peerbit -- -t node --grep "dial"
• pnpm -C packages/programs/program/program run build

Refs #599