Tweaking some CPU_TIME capability assignments to bindings

Capability cpu_time should be propagated across all bindings from the
client.

Removing some unnecessary assignments of the capability that could
happen even when the client did not have this capability. Although
this is practically not expected to happen, this enforces correctness of
state by making failures apparent.

Also making sure we don't skip OomAdjuster updates on provider or
service connections when the cpu_time capabililty needed to be updated
for the host process.

Flag: com.android.server.am.use_cpu_time_capability

Test: atest FrameworksMockingServicesTests:ServiceBindingOomAdjPolicyTest
Test: atest FrameworksMockingServicesTests:MockingOomAdjusterTests

Bug: 370817323
Change-Id: I6915e4aed5aa02d2e2c6addad1f03a1db899b0ca