refactor: migrate RateLimitController to @metamask/messenger

[cryptodev-2s]

Explanation

This PR migrates RateLimitController to the new @metamask/messenger message bus, as opposed to the one exported from @metamask/base-controller.

References

• Related to Implement messenger delegation #5626

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

Migrates RateLimitController to the new @metamask/messenger, updates types/tests, and renames metadata flag; adds dependency and updates docs/config.

• @metamask/rate-limit-controller:
  • Migrate from RestrictedMessenger (base-controller) to Messenger from @metamask/messenger and BaseController from @metamask/base-controller/next.
  • Update action registration to messenger.registerActionHandler and adjust types (RateLimitMessenger, action/event types, controllerName).
  • Rename metadata field anonymous to includeInDebugSnapshot.
  • Update tests to construct root and namespaced messengers via @metamask/messenger.
  • Add dependency @metamask/messenger@^0.3.0; update TS project references.
  • Changelog: note BREAKING changes for messenger migration and metadata rename.
• Repo Docs/Config:
  • README dependency graph: add rate_limit_controller --> messenger; add eip_7702_internal_rpc_middleware --> controller_utils.
  • ESLint warning thresholds: adjust entries for RateLimitController.ts.

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[mcmire]

LGTM!

[mcmire]

Oops, noticed one thing.

[mcmire]

LGTM!