Replace use_context_attribution_source / check_full_attribution_source_chain...

Replace use_context_attribution_source / check_full_attribution_source_chain flags with read-only flag

The VDM team needs the data delivery permission checks to be enabled in
trunkfood to move forward. Due to b/373966108, enabling the flags through
teamfood is a risk. Replace these runtime flags with a single compile-time
flag, which does not carry that risk.

Bug: 190657833
Test: Ran CameraPermissionTest
Flag: com.android.internal.camera.flags.data_delivery_permission_checks
Change-Id: Ieadc190da8e4f5e9c95cb111900af5ca4980588d