Update policy summary to be more readable

What does this MR do and why?

Update policy summary to be more readable

• update rules wording and consolidate into single sentence

Changelog: changed

EE: true

Screenshots or screen recordings

SE = Scan Execution SR = Scan Result

Situation	Before	After
SE - no action
SE - One rule/action
SE - Two rules/actions
SE - Multiple actions
SE - Cluster
SR

How to set up and validate locally

Follow the policy documentation

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #341932 (closed)