Unfortunately, there's apps out there that trigger contact changes
very frequently. Because we listen to the system for contact
changes to tell us when to sync, that could result in us sending
an abundance of contact syncs to linked desktop instances.
This throttles contact sync requests using the following methodology:
- By default, throttle contact syncs to 6 hrs while the app is
backgrounded.
- If a sync is throttled in the background, we set a dirty flag and
will execute the sync the next time the app is foregrounded.
- Syncs explicitly requested by desktop are never throttled.
We have to make some changes, and it's gotten to the point where
maintaining it as a separate library is more hassle than it's worth,
especially with Google releasing WorkManager as the preferred job
scheduling library.
This was a holdover from Signal's origins as a pure SMS app.
It causes problems, depends on undefined device specific behavior,
and should no longer be necessary now that we have all the
information we need to E164 all numbers.
// FREEBIE
