List internal integration endpoint only works with personal token.

### Environment SaaS (https://sentry.io/) ### Steps to Reproduce 1. Create an integration will full access or an org token. 2. Use the token on this endpoint: https://docs.sentry.io/api/integration/list-an-organizations-integration-platform-installations/ ### Expected Result The list of internal integrations is displayed. ### Actual Result Org token results in: ``` { "detail": "You do not have permission to perform this action." } ``` Internal integration token results in: ``` { "detail": "Not found." } ``` ### Product Area APIs ### Link _No response_ ### DSN _No response_ ### Version _No response_