[BWC and API enforcement] Enforcing the presence of API annotations at build time

[reta]

Is your feature request related to a problem? Please describe

The introduction of #9304 allows to annotate every publicly exposed API with visibility annotation. The checks were running for a while now but they only warned about violations.

Describe the solution you'd like

The large chunk of APIs is already annotated and the checks are passing without any violations. It makes sense to make them mandatory (and fail with error) if API visibility violations are detected.

Related component

Other

Describe alternatives you've considered

No response

Additional context

No response