replace ANDROID_ID with a per-app random value reused across same signature apps in the profile

[thestinger]

This will preserve the property of it being the same across same signature apps while no longer having it be persistent after uninstalling all same signature apps.

This is a low priority because it only prevents apps from detecting that the profile is the same after reinstallation. There are a lot of other potential ways to do this. Apps without scoped storage can generate their own ID and store it in their per-app external storage directory which persists after uninstalling and users would have to remove it to get rid of it. More generally, apps can use any data storage they're granted by the user or could use an API provided by another app.