Remove label gap in treemap

Hello. I have been finding plotly's treemaps very useful

One feature that I would find helpful is being able to remove the gap below each box label.

The problem is that for smaller boxes, the gap ends up taking a large amount of the space. This space is essentially wasted, and it makes each node's children proportionally smaller than they otherwise would be. This prevents an accurate visual comparison between one parent's children to another parent's children.

I have highlighted what I mean in the figure below using red arrows

Charts with lots of nesting would benefit a lot from being able to use this space

この issue では実装ファイルもテストも指定されていません。まず treemap のエントリポイントと既存の layout または rendering のテストを見つけ、次にラベル用の余白がある場合とない場合の入れ子になったボックスを比較してください。完了時には、その余白を削除できる方法を提供し、子領域を大きくするとともに、比率を視覚的に比較可能な状態に保てるようにする必要があります。