Bug: Default Mac team for ABM token getting reset to "No team"

[ddribeiro]

Fleet version: Observed in 4.59.0 and 4.59.1

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💥  Actual behavior

customer-fourier is reporting that their ABM token default team assignment for macOS hosts is being reset back to "No team" after an unknown and inconsistent period of time.

🧑‍💻  Steps to reproduce

1. Turn on Apple MDM and configure Automatic enrollment for Apple.
2. Create a team in Fleet to use for testing.
3. Navigate to Settings > Integrations > Mobile device management (MDM) > Automatic enrollment for Apple > Edit.
4. From the Actions drop down, select Edit teams
5. Choose the team you created in step 2 as the selection for macOS hosts. Click Save.
6. After an unknown and inconsistent period of time, the macOS team assignment will have reverted back to No team.

🕯️ More info (optional)

Here's a Gong snippet of the call where this was reported: https://us-65885.app.gong.io/call?id=8851708373257635984&highlights=%5B%7B%22type%22%3A%22SHARE%22%2C%22from%22%3A184%2C%22to%22%3A351%7D%5D

Notes:

• Gitops is not set up in this environment
• The customer is only using Macs, so unknown if iOS and iPadOS tokens would also revert.
• Intervals where this happen are inconsistent and appear to be random.
• ABM token is not being reimported.

I am attempting to reproduce this internally and will update this ticket if I'm able to.

[JoStableford]

Linked to Unthread ticket:

Conversation #3687