Jl/caip multichain/replace known caip namespace with metamask utils

[jiexi]

Description

Replaces our internal KnownCaipNamespaces enum with one that was added in @metamask/utils 9.2.0, but is patched into 8.5.1 on this branch

Related issues

See: https://github.com/MetaMask/MetaMask-planning/issues/3050

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

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[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher

🚮 Removed packages: npm/@metamask/utils@8.5.0), npm/@types/debug@4.1.7), npm/@types/ms@0.7.31), npm/pony-cause@2.1.10)

View full report↗︎

[adonesky1]

LGTM