(size: Tiny) - [Workflow] Value Streams Dashboard

https://gitlab.steveazz.xyz/groups/charlie-group/-/analytics/dashboards/value_streams_dashboard (Cell 1)

Many of the frontend components are not loading, but are available upon mousing over.

Proposal

Update GlSparklineChart to hide the tooltip when either the title or value is an empty string. This extends the existing behaviour that validated against null or undefined values/titles