Align layer labels with layer width in horizontal layout

[rashidakanchwala]

Description:

In the horizontal layout, the width of each layer is determined by the number of nodes inside it, which is correct. However, the layer names (labels) are positioned above the layer rectangle and their width is calculated separately from the layer's width.

This misalignment makes it difficult to:

• Ensure that long layer names fit within the corresponding layer rectangle.
• Properly wrap or adjust long labels.
• Maintain padding on both sides of the text for readability (especially when you zoom in/zoom out)
• Since layer rectangles and layer labels are calculated differently, fixing this requires changes to how labels are positioned and how their width is determined.

This issue is to fix the above and it is going to be a bit complicated. I would give it a 5 or an 8.

• Include labels so that we can categorise your feature request