A query for name=%13 on the explore causes statement timeouts

As observed in https://gitlab.com/gitlab-com/gl-infra/production/-/issues/2786:

Opening the explore page with a query string including name=%13 causes a statement timeout. https://gitlab.com/explore?name=%13

This could be a vector for DoS when hitting this endpoint over and over.

Issue in sentry: https://sentry.gitlab.net/gitlab/gitlabcom/issues/1817062