fix: Consolidate to a single subscribe stream in Replicator

[sds]

Motivation

We were seeing issues where events would arrive out of order when processing two streams. To avoid this, have them be processed on the same stream, where hubs will ensure they are emitted in order (specifically FID registration followed by messages for the given FID).

Change Summary

Describe the changes being made in 1-2 concise sentences.

Merge Checklist

• PR title adheres to the conventional commits standard
• PR has a changeset
• PR has been tagged with a change label(s) (i.e. documentation, feature, bugfix, or chore)
• PR includes documentation if necessary.
• All commits have been signed

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PR-Codex overview

This PR consolidates the subscription connections in the HubReplicator class.

Detailed summary

• Consolidates the chain events and other events subscriptions into a single "all-events" subscription.
• Updates the corresponding variables and keys.
• Removes unused imports and variables.
• Updates the event processing logic.
• Starts and stops the new subscription.

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Name	Status	Preview	Comments	Updated (UTC)
hub-monorepo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 1, 2023 1:09am

[changeset-bot]

🦋 Changeset detected

Latest commit: 135e023

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@farcaster/replicator	Patch

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

see 4 files with indirect coverage changes

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