Set pm.BackgroundDexOptService as the source of true

The real dexopt maintainance job is
com.android.server.pm.BackgroundDexOptService, and not
com.android.server.BackgroundDexOptJobService

Partial revert of commit 096d304ae3d85c1bfcda1a1d9cd4eb13d0815500.

Test: manual inspection
Bug: 36140426
Change-Id: I983ac91117f107282095fa7eefdbce08e0dcfce3
5 files changed