Removing some system binder calls in AppWidgetHostView

> Using the AppWidgetProviderInfo for applicationInfo instead of getting
  it from packageNamager
> Sending ProviderInfo update when the package is suspended/unsuspended so
  that the provider info on client side is always up-to-date

Bug: 67865199
Test: Manually tested on device
Change-Id: Id44facc30b4c3cc01e155eba9feeb541997fc816