Use vue routes for group custom Value Stream Dashboard

What does this MR do and why?

Add wildcard to group VSD route allowing usage of vue routes. Prevents 404 when using direct link access.

related to #441202 (closed)

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.

How to set up and validate locally

1. Enable group_analytics_dashboard_dynamic_vsd feature flag
2. Create a group with a customized value stream dashboard
3. Navigate to the group Analytics Dashboard using the left sidebar menu Analyze > Analytics Dashboards
4. From the dashboard list, click on your custom value streams dashboard
5. Refresh the page, no 404 error happens