ThematicStyling and stylePicker

[asemoller]

Is your feature request related to a problem? Please describe. It would be useful if you could combine thematicStyling with stylePicker.

For now, this is what happens if you combine these two: If "style" is set to a style with thematic styling and have a stylePicker, then "thematicStyling" function works just fine until you change the style with "stylePicker". After that, it's no longer possible to use the "thematicStyling" function.

If "style" is set to a simple style and have a stylePicker (or not), it's not possible to toggle the layer on/off or click the more-info button.

Describe the solution you'd like I know that these two don't work together according to pr #1780. But it would be really nice if a user could switch between different styles with "stylePicker" and if a style has a thematic style, then "thematicStyling" should work for that style.