Grid include min and max value

Can we include min and max values for drawing grid lines?

I want to show grid lines for outer box also like for 0 and max value.

I know border is supposed to be used for this use case but I want the same style as grid lines (dotted / dashed)
and flutter dont allow dotted / dashed border.

Can we have something proper for this?

Start by locating the grid-line rendering and configuration entry points in the fl_chart repository. Determine how minimum and maximum axis values are represented, then verify that outer grid lines can use the existing dotted or dashed grid-line styling without relying on borders.

Written by the indexing model from the issue text.