Upgrade @metamask/bridge-controller to version 70.0.0

A new major version of `@metamask/bridge-controller`, 70.0.0, 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 checking the project’s package manifests to determine whether @metamask/bridge-controller is present and where its version is declared. Upgrade it to 70.0.0, then run the relevant project checks and confirm that the extension still builds and tests pass.

Written by the indexing model from the issue text.