Extreme battery saver: Force background check on all apps

- Power-saver whitelisted (including temp whitelist) apps and system UIDs
are exempted.

- Otherwise, background services and manifest receivers will be restricted
as if OP_RUN_IN_BACKGROUND is set to IGNORE.

Test: manual test
Bug: 68769804
Change-Id: I49e7d32357ffc177ace38a064f943643f4f71058