Add link filtering to 8.0

[mmitche]

Do this cheaply compared to main, since the sources have diverged and it's a hard direct port. We use the same patterns as main, but just don't alter the data structures to pass the patterns through.

To double check:

• [ ] The right tests are in and the right validation has happened. Guidance: https://github.com/dotnet/arcade/blob/main/Documentation/Validation.md