Make chart legend visible when there is no data yet

Feature description

I'd like to make it possible to make stacked bar chart legend visible even when there is no data yet.

Problem/motivation

For one of my use cases, I'd like to render stacked bar chart for two specific scenarios – when there is no data yet, and when there is data but with 0 values (see examples below). In both cases chart tooltip is correctly rendered on hover with either No data or 0 as a value, but chart legend is only rendered for chart with 0 values.

Used library version is 1.6.5.

Chart with no data

<lume-stacked-bar-chart
  :labels="['1', '2', '3']"
  :data="[
    { label: 'Group 1', values: [] },
    { label: 'Group 2', values: [] },
  ]"
/>

Chart with 0 values

<lume-stacked-bar-chart
  :labels="['1', '2', '3']"
  :data="[
    { label: 'Group 1', values: [0, 0, 0] },
    { label: 'Group 2', values: [0, 0, 0] },
  ]"
/>

Describe alternatives you've considered

No response

Additional context