Describe the issue
See elastic/kibana#130197

To Reproduce
Steps to reproduce the behavior:

1. Go to [storybook](https://elastic.github.io/elastic-charts/?path=/story/legend--inside-chart&globals=theme:light&knob-Number of series=5&knob-Series with long name=3&knob-Inside chart_Legend=true&knob-Show legend action_Legend=&knob-floating columns_Legend=2&knob-vAlign_Legend=bottom&knob-hAlign_Legend=right&knob-direction_Legend=vertical&knob-max label lines_Legend=1&knob-long label_Legend=long name long name long name long name long name long name long name long name)
2. Resize the chart

Expected behaviour
We should truncate the labels to fit within the chart area

Screenshots

Kibana Cross Issues

elastic/kibana#130197

Checklist

• The proper chart type label has been added (e.g. :xy, :partition)
• The proper feature labels have been added (e.g. :interactions, :axis)
• Every related Kibana issue is listed under Kibana Cross Issues list and the kibana cross issue tag is applied