perf: discard old contact info messages early

[karmacoma-eth]

Motivation

When processing a contact info message, the old behavior was:

1. hashing the content, verifying the signature
2. then checking the timestamp and discarding the message if it's too old

The new behavior just inverts the order of these two operations, so we avoid doing expensive work if we're going to discard the message.

Please advise on how to add a test for this, at least it doesn't break any existing tests.

Merge Checklist

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Additional Context

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---

PR-Codex overview

This PR focuses on improving the message processing in the Hub class of the Hubble application. The notable changes include:

• Added a check to ignore messages that are too old
• Added validation for message signatures if present
• Updated the address book for the peer

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Latest commit: 5467c20

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Name	Status	Preview	Comments	Updated (UTC)
hub-monorepo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 17, 2024 0:18am

[sagar-a16z]

Lgtm!

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (1a52b86) 74.65% compared to head (5467c20) 74.66%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
apps/hubble/src/hubble.ts	33.33%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1710   +/-   ##
=======================================
  Coverage   74.65%   74.66%           
=======================================
  Files          99       99           
  Lines        9324     9327    +3     
  Branches     2097     2100    +3     
=======================================
+ Hits         6961     6964    +3     
  Misses       2250     2250           
  Partials      113      113           

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[sanjayprabhu]

I missed this. Thank you!