Fix crash while loading installed apps in AppListFragment

[Dev97633]

Motivation

• The app could crash while opening because installed-app scanning ran on the main thread and a single malformed package (bad label/icon/metadata) could throw and abort the entire load.
• Loading work continued beyond the Fragment view lifecycle which could cause lifecycle-related crashes when the view was torn down during a long scan.

Description

• Move installed-app loading off the main thread into a lifecycle-bound coroutine job stored in loadAppsJob and launched from viewLifecycleOwner.lifecycleScope using Dispatchers.IO (loadInstalledAppsSafely).
• Cancel loadAppsJob in onDestroyView() to prevent work running after the view is destroyed.
• Harden package parsing with mapNotNull { runCatching { ... }.getOrNull() } so a single problematic ApplicationInfo does not crash the entire list load.
• Add safe fallbacks for packageName (orEmpty()) and appLabel (use package name when label retrieval fails), preserving the existing loadAppIconWithFallback behavior.

Testing

• Attempted to run ./gradlew :app:assembleDebug but the environment`s wrapper script failed (permission and shell syntax errors) so a full build verification could not be completed here.
• No other automated tests were executed in this environment; code changes were applied and committed locally.

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Codex Task