Upgrade @metamask/approval-controller to version 8.0.0

A new major version of `@metamask/approval-controller`, 8.0.0, 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.

Check the project's package manifests and references to @metamask/approval-controller, confirming whether this package is present and which version is installed. Upgrade it to 8.0.0, then run the relevant project checks and verify that the mobile app still builds and tests pass.

Written by the indexing model from the issue text.