Review of suspend/unsuspend APIs

Clarified the package extras bundle returned from
getSuspendedPackageAppExtras.
Moved the bundle arg to the last in LauncherApps.onPackagesSuspended and
clarified the contents of the Bundle.
isPackageSuspended(String) now throws a NameNotFoundException if the
package is not found.
Also, removed a permission check from isPackageSuspendedForUser.

Test: builds, boots, existing tests:
atest com.android.server.pm.SuspendPackagesTest

Bug: 77518983, 77517955, 77507744, 77801528
Change-Id: I06b5f69f8f8a079c206863cb6122e90be58366cd