Feat/eip 7702 internal rpc middleware

[MoMannn]

Explanation

This PR adds RPC methods for upgrading Externally Owned Accounts (EOAs) to EIP-7702 delegator accounts. This functions are only callable by preinstalled snaps. It adds

wallet_upgradeAccount for upgrading the account
wallet_getAccountUpgradeStatus for checking if account is upgraded or not

References

Needed for: MetaMask/metamask-extension#36452

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

---

Note

Introduce @metamask/eip-7702-internal-rpc-middleware with wallet_upgradeAccount and wallet_getAccountUpgradeStatus, and integrate it into build, ownership, and team mappings.

• New package: @metamask/eip-7702-internal-rpc-middleware
  • Implements internal JSON-RPC methods: wallet_upgradeAccount, wallet_getAccountUpgradeStatus.
  • Hook-based design with param/address validation utilities, constants, and typed results.
  • Added tests, README, changelog, license, build/typedoc configs, and exports.
• Repo integration
  • Added to README.md package list and build references (tsconfig.build.json).
  • Updated teams.json and .github/CODEOWNERS ownership entries.
  • Workspace wiring in yarn.lock.
• Dependency graph updates (README mermaid)
  • phishing_controller --> transaction_controller.
  • signature_controller --> gator_permissions_controller.

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[jeffsmale90]

This looks great. A couple minor naming comments.

[mcmire]

Did a brief pass, will do a round 2 later.

One question I had: Is it necessary to add internal-rpc within the package name? We didn't do that for eip-5792-middleware I notice.

[jeffsmale90]

@mcmire

Is it necessary to add internal-rpc within the package name? We didn't do that for eip-5792-middleware I notice.

The reasoning for this is that these RPCs aren't strictly EIP-7702, they're internal RPCs for supporting EIP-7702, not intended for consumption by third parties.