chore(compass-components): expose v-list listRef prop COMPASS-7567

[mabaasit]

This PR exposes virtual list listRef prop and also item index when trying to estimate the item height. Doing this as part of COMPASS-7567 and this will be eventually used in browser-repl package inside mongosh.

Description

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Open Questions

Dependents

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)