Upgrade @metamask/profile-sync-controller to version 26.0.0

A new major version of `@metamask/profile-sync-controller`, 26.0.0, 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 where @metamask/profile-sync-controller is declared and used in the metamask-mobile repository, then review the package's 26.0.0 release changes for compatibility concerns. Update the dependency and verify that the project’s relevant checks pass without regressions.

Written by the indexing model from the issue text.