Can't change the label of a layer

[prushforth]

When you load a layer from a remote URL via the <layer- src> attribute, it's expected that you won't have control over the accessible name of the layer - it's set via the <map-title> element in the remote document. However, if there's no <map-title> element in the document, you should be able to set the label attribute of the <layer-> element and see that change reflected in the layer control, but it not currently that way. If the <layer-> has inline content, i.e. no src attribute, you should be able to control the accessible name of the layer in the layer control by adding/changing the <map-title> child element of <layer->, or maybe the <layer- label> value as well tb discussed.

Note that changing the accessible name of a thing is not advisable.

[prushforth]

The behaviour of HTMLLayerElement.label is not yet specified, but it is noted in the docs that this needs implementation (we should update that note when we close this issue).