Use a service decorator for the repository override

Problem/Motivation

To ensure the module works well with future changes to the upstream redirect.repository service.

Rather than mirroring its arguments, a parent/decorator pattern should be used instead.

As with the current method, there's no guarantee of which redirect.repository service will be used first by the container.

Proposed resolution

Use a parent/decorator pattern for the redirect regex repository service.

Remaining tasks

Add MR.