Possibly incorrect `self` link on `collections/<collection-id>/items` page

Spotted by @geospatial-jeff, the "self" link at https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items?limit=1 links to the collection "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a".

❯ curl --silent 'https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items?limit=1' | jq .links[3]
{
  "rel": "self",
  "type": "application/json",
  "href": "https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a"
}

Should that instead be the URL itself, like https://planetarycomputer.microsoft.com/api/stac/v1/collections/sentinel-2-l2a/items?limit=1?

Start by reproducing the issue with the curl request for the collection items endpoint and inspect the returned links. Find the API entry point that builds this response, then verify the self href preserves the full request URL, including its query string, and add or update a regression test if the project has coverage for this endpoint.