When I add an image with
xref="paper", x=1, xanchor="right", then if there is no legend the image is actually placed at the righstmost of the plot.
But if there is a legend on the right side, it seems like the legend doesn’t count as part of the plot, so the image will be to the left of the legend.
I know that I can manually move it by specifying a larger value than
x=1, but the legend can be of different widths depending on the label values, so I wanted to know how can I make the image always position to the right of the entire plot area?