Make policy migration context aware

What does this MR do and why?

Make policy migration context aware

• Use correct path for pipeline execution policy

• Transmit file path for pipeline config and compliance framework ID in params if the form has the data filled in

• Refs:

  • Move compliance pipeline UI editing to accordion (#440922)
  • #424387 (comment 1968071537)+

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.

Screenshots or screen recordings

Before	After
CTA in banner just leads to documentation	Banner contextually leads to pipeline policy editor, if there is a pipeline file set it will add it to the URL parameters, along with the current framework GID (Note: the policy editor does not use these data yet.)

How to set up and validate locally

1. Enable feature flag ff_compliance_pipeline_maintenance_mode in rails console (rails c): Feature.enable :ff_compliance_pipeline_maintenance_mode
2. Visit compliance center Docs
3. Create/Edit a framework
4. Click 'Create a policy', observe URL
5. Go back
6. Fill in pipeline config path
7. Click 'Migrate to a policy', observe URL (Note: the policy editor does not use these data yet.)