This PR removes the `GET /extensions` endpoint from Collab, as it has been moved to Cloud. In #48717 we changed it to just proxy to Cloud, but we didn't end up needing that. Release Notes: - N/A
This PR removes the `GET /extensions` endpoint from Collab, as it has been moved to Cloud. In #48717 we changed it to just proxy to Cloud, but we didn't end up needing that. Release Notes: - N/A