probeInstalledPackages
Probes installed-application counts via PackageManager.getInstalledApplications.
Privacy: high — the installed-app inventory is strongly identifying. This probe returns only aggregate counts (total/system/user), never package names, and backs the advanced InstalledAppsProbe category. Package visibility on Android 11+ limits results.
Return
An InstalledPackageProbe with counts, or null on failure.
Parameters
context
Context providing the package manager.