[sync-internals] Notifications Enabled: false

Hi,

I'm curious, on my sync server (`prod` branch) I do see the following on the `brave://sync-internals/` page, highlighted in red:
```
Network
Notifications Enabled: false
```
I think when using the official sync server I don't see this flagged, so I'm wondering if this needs fixing at my end. What kind of "notifications" is this about and do they have to be enabled for proper/safe operation?

Thanks

Start at brave://sync-internals/ and compare the self-hosted prod server's Network/Notifications Enabled status with the official sync server. The issue does not identify a Go file, test, configuration entry, or desired change, so the meaning of the flag and completion condition need maintainer clarification.

Written by the indexing model from the issue text.