[AppInfo] Enable logs for debugging unexpected AppInfo changes.

Here's a sample log run through of AllAppsStore and PackageUpdatedTask
logs: http://gpaste/5250747917664256

Bug: b/290090023
Flag: None. Adding logging.
Test: None. Adding logging.
Change-Id: Ia1d620a50267d6a65fe719936d7e87e6dad13afa