Add storage_summary_donut above ProfileSelectStorageFragment

- Modify ProfileSelectFragment to support add preference xml in the
top, and tabLayout below the preferences. Base preference layout is
dummy_preference_screen.xml which contains no preference.
ProfileSelectStorageFragment contains StorageSummaryDonutPreference
above the tabLayout.
- Make StorageSummaryDonutPreferenceController self workable without
StorageDashboardFragment dependence.
- Rename inactive_apps.xml to dummy_preference_screen.xml
- Move ShadowPrivateStorageInfo from LowStorageSliceTest

Bug: 141601408
Test: manual
Change-Id: Ide12840dc81bb104f328e230ecda5d35bba01d7a