Scoping policy conditions on subject or user

What does this MR do and why?

Refactoring on the policies within /ci

Adding scope to the conditions will improve performance by caching

docs: https://docs.gitlab.com/ee/development/policies.html#scope

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

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Before	After

How to set up and validate locally

Everything should work as normal, running the pipeline with all the pipeline::run all xyz labels for better test coverage

Related to #460263 (closed)