Describe the bug
After upgrading to 2023.8.1, the 'Apps with most usage' table no longer shows any application names.

To Reproduce
Steps to reproduce the behavior:

1. Log in with an administrator account
2. Go to the Admin Interface
3. See 'Apps with most usage'. The table will be present, with correct data, but the Application column is empty

Expected behavior
The Application column should contain the correct application names.

Screenshots

Logs
N/A

Version and Deployment:

• authentik version: 2023.8.1
• Deployment: Docker Compose

Additional context

The underlying cause seems to be a serialization error in the /api/v3/events/events/top_per_user/?action=authorize_application&top_n=11 endpoint. The application field is serialized as a string, rather than an object, as shown in the following screenshot: