test(tempo): cover access key authorizations

[deodad]

Summary

Bump viem + Add test coverage for all MPP payment paths that tests that access key accounts using a key authorization manager will attach the key authorization on the first transaction.

Motivation

Previously access keys accounts could only be used if previously registered onchain. The latest version of viem allows access key accounts to attach an authorization manager that viem will use to attach authorization during prepareTransactionRequest.

Changes

• Updated viem to 2.51.3 in package.json and pnpm-workspace.yaml which had a fix for failing getMetadata calls when sent from an unauthorized access key account
• Added src/tempo/AccessKeyAuthorization.test.ts for charge pull, charge push fallback, session open, session settle, and session close.
• Asserted generated Tempo transactions include the pending keyAuthorization from KeyAuthorizationManager.

Testing

• CI=true ./node_modules/.bin/vp test src/tempo/AccessKeyAuthorization.test.ts
• CI=true pnpm check:types
• CI=true pnpm check

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	viem@​2.51.3

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[pkg-pr-new]

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npm i https://pkg.pr.new/mppx@483

commit: 652db5d