Missing tooltip for multi-group series charts

[markov00]

Describe the bug
When creating a multiaxis, multi group chart, the tooltip doesn't display the values for all the available series.

To Reproduce
Steps to reproduce the behavior:
Create a chart with two line series with two different groups:

<Chart className={'story-chart'}>
        <Settings showLegend={false} />
        <Axis id={getAxisId('bottom')} position={Position.Bottom} title={'Bottom axis'} showOverlappingTicks={true} />
        <Axis
          id={getAxisId('left')}
          groupId={getGroupId('group1')}
          title={'Line 1'}
          position={Position.Left}
          tickFormat={d => `${Number(d).toFixed(2)} %`}
        />
        <Axis
          id={getAxisId('right')}
          title={'Line 2'}
          groupId={getGroupId('group2')}
          position={Position.Right}
          tickFormat={d => `${Number(d).toFixed(2)}/s`}
        />
        <LineSeries
          id={getSpecId('line1')}
          groupId={getGroupId('group1')}
          xScaleType={ScaleType.Linear}
          yScaleType={ScaleType.Linear}
          xAccessor="x"
          yAccessors={['y']}
          stackAccessors={['x']}
          splitSeriesAccessors={['g']}
          data={[{ x: 0, y: 5 }, { x: 1, y: 4 }, { x: 2, y: 3 }, { x: 3, y: 2 }]}
        />
        <LineSeries
          id={getSpecId('line2')}
          groupId={getGroupId('group2')}
          xScaleType={ScaleType.Linear}
          yScaleType={ScaleType.Linear}
          xAccessor="x"
          yAccessors={['y']}
          stackAccessors={['x']}
          splitSeriesAccessors={['g']}
          data={[{ x: 0, y: 2 }, { x: 1, y: 3 }, { x: 2, y: 4 }, { x: 3, y: 5 }]}
        />
      </Chart>

mouseover the chart and the tooltip will only display the line2 value.

Expected behavior
The tooltip should show either line1 and line2 values.

Screenshots

Version (please complete the following information):

• Elastic Charts: master

Additional context
n/a

Errors in browser console
n/a

Kibana Cross Issues
n/a

Checklist

• every related Kibana issue is listed under Kibana Cross Issues list
• kibana cross issue tag is associated to the issue if any kibana cross issue is present

[markov00]

🎉 This issue has been resolved in version 3.11.3 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

Your semantic-release bot 📦🚀