when device didn't support PersistentDataBlockManager, Settings will
crash at get PersistentDataBlock service.
So we need to check if device support PersistentDataBlockManager
before call getService.
Fixes: 196634851
Test: manual verify on aosp build.
Change-Id: I5afba5df8c4831499478490b442c0fcf367d23ae
Update language to comply with Android's inclusive language guidance
See https://source.android.com/setup/contribute/respectful-code for reference
Bug: 161896447
Test: robotest & manual
Change-Id: I94969f6903d047b9bc41b1e8c14096c92c460b38