Upgrade @metamask/ens-controller to version 19.0.0

A new major version of `@metamask/ens-controller`, 19.0.0, 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/ens-controller and checking how the current version is locked. Update the dependency to 19.0.0, then run the repository's existing validation and test checks to confirm the mobile project still builds and passes.

Written by the indexing model from the issue text.