Layer legend is not updated

[ElenaGallo]

By changing the style of the layer, the legend does not change accordingly

How to Reproduce

• See the steps in the gif below:

https://user-images.githubusercontent.com/56537133/181194652-85305f5c-22ef-4422-9fde-f5282df32ee8.mov

[giohappy]

closed in favour of https://github.com/GeoNode/geonode-mapstore-client/issues/1117