Upgrade @metamask/accounts-controller to version 34.0.0

A new major version of `@metamask/accounts-controller`, 34.0.0, is now available. This issue has been assigned to you and your team because you code-own this package in the `core` repo. If this package is present in this project, please prioritize upgrading it soon to unblock new features and bugfixes.

Start by locating the project dependency declaration for @metamask/accounts-controller and any associated lockfile entries. Check the package's current version and run the repository's relevant checks after updating it; done means the project uses version 34.0.0 without regressions.

Written by the indexing model from the issue text.