token pagination implementation is broken

[keul]

(note not able to test the issue with this repo due to #12, so still used the old implementation on stac-fastapi monorepo

The standard implementation of the token pagination provided out of the box is not working with the search. I'm was to easily replicate the issue using the stac-browser.

how to reproduce

• run docker compose up
• connect to localhost:8081 (SQLAlchemy implementation)
• go to search at http://localhost:8081/search

pagination links at the bottom will be something like this:

 "links": [
    {
      "rel": "next",
      "type": "application/geo+json",
      "href": "{'token': '_qF4LJvt'}?token=_qF4LJvt",
      "method": "GET",
      "body": null,
      "merge": false
    }
  ],

Someway the href is messed up