How to get rid of the extra spacing at the chart's left/ride side?

Hi,

I'm using the example you provided, bar_chart_sample1. When putting the chart in a `SizedBox(width: 300, height: 300)` and making the chart's background color red, there is spacing at the left and right side (see the yellow markers):


I have not found anything to get of that, so the chart just occupies the space it requires.

Is there any property I've overlooked?

Using `alignment: BarChartAlignment.spaceBetween,` is not an option, because I want to define the `groupSpacing`.

Thanks!

Start with the bar_chart_sample1 example and reproduce the chart inside SizedBox(width: 300, height: 300) with a red background. Investigate how the chart handles alignment, groupSpacing, and its left and right padding. Done means the extra spacing is removed while a custom groupSpacing remains possible.

Written by the indexing model from the issue text.