Upgrade @metamask/sample-controllers to version 5.0.0

A new major version of `@metamask/sample-controllers`, 5.0.0, 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.

Search the repository's package manifests and lockfiles for @metamask/sample-controllers, first confirming whether the package is present and how it is referenced. Update the dependency to 5.0.0, then run the affected validation or test commands to confirm the upgrade does not break the project.

Written by the indexing model from the issue text.