Searching within book lists

### Proposal

Dear developers,
Can you please make it possible to search within a book list (similar to how it's already possible on author pages)?

It would be great to have the ability to:
1) search within a specific, individual book list, whether created by myself or another user;
2) do a global search within all of my own or another user's book lists.

Thank you for considering it.

### Justification

### Breakdown

See #7052

#### Instructions for Contributors

Please [run these commands](https://github.com/internetarchive/openlibrary/wiki/Git-Cheat-Sheet#working-on-your-branch) to ensure your repository is up to date **before** [creating a new branch](https://github.com/internetarchive/openlibrary/wiki/Git-Cheat-Sheet#making-changes-and-creating-a-pull-request) to work on this issue and **each time after** pushing code to Github, because the pre-commit bot may add commits to your PRs upstream.