Description:
When searching the catalog with the/search-endpoint, aGET /<indices>/_search request is done with all indices listed in the URL path. However when doing such a search on a large amount of indices, it is possible that the size of the endpoint exceeds Elasticsearch’s maximum allowed HTTP line length (4096 bytes), resulting in the following error:

{"code":"RequestError","description":"RequestError(400, 'too_long_http_line_exception', 'An HTTP line is larger than 4096 bytes.')"}

The solution in this commit moves the indices from the endpoint to the body of the request once the amount of indices passes a certain threshold. The indices of the endpoint will be replaced byITEM_INDICES. Since the query still filters on the correct indices, this change preserves the behavior while avoiding the URL length limitation.

PR Checklist:

• Code is formatted and linted (runpre-commit run --all-files)
• Tests pass (runmake test)
• Documentation has been updated to reflect changes, if applicable
• Changes are added to the changelog