auto print legend for AGS_MAP/TILE layers depending on id doesn't work

[Grammostola]

If an AGS_MAP or AGS_TILE type layer is configured in index.json without a style but with the correct id and some name the layer will not automatically receive a print legend (there will simply be the title of the layer and no legend icon/s)

The culprit appears to be the following line in the "getAGSJSONContent()" of print-legend.js:

const legendLayer = json.layers.find((l) => l.layerId === id || l.layerName === id)

where the id of the received json can be a Number and the id argument is a string.