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_