Updated Logic for Build AppLaunchData for shortcut customization

Logic for build appLaunch data for shortcut customization has been
updated as default apps in apps shortcut category have their
appLaunchData computed and cached while user-added apps have their
appLaunchData built as componentData from packageName and className.

Test: CustomShortcutCategoriesRepositoryTest
Flag: com.android.systemui.extended_apps_shortcut_category
Bug: 403244725
Change-Id: Ie54684bd84302c7ee19ba2666dc0e8fbe7907ae1