Updates condition to show merge checks component

What does this MR do and why?

Changes the if condition to show the merge checks component when a merge request has auto-merge enabled.

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

How to set up and validate locally

• Enable merge_when_checks_pass, additional_merge_when_checks_ready, and merge_blocked_component
• Visit a merge request that requires approval
• Click Set to auto-merge