[License Compliance Widget Extension - Frontend - Implement `License-Check` approval required messaging

Description

Add text to indicate if approval is required.

Current iteration of License MR widget extension

What we need to add to the current iteration from the legacy component

Implementation Plan

• In ee/app/assets/javascripts/vue_merge_request_widget/extensions/license_compliance/index.js update the summary logic to show the approval required text.

• Update unit tests

Testing

Frontend engineer to update frontend unit tests