Fix license compliance pipeline tab to work with approval_status migration

This test fails with feature flag on:

qa/specs/features/ee/browser_ui/13_secure/license_compliance_spec.rb:97

On the pipeline tab the new approval statuses aren't parsed by the UI correctly.

Problem:

It only shows uncategorized licenses in the single pipeline view

Expected:

Licenses are shown in the right categories

Implementation Plan:

• Push frontend feature flag from pipelines controller.