Hide basemaps on maps preview

### Description

I would like to request adding a button to hide basemaps on the map preview

### Motivation

This request stems from the fact that data can be difficult to view with the basemap activated

Start by locating the map preview component and the code that renders or configures its basemap. Check how preview controls are structured and how map visibility is tested, if tests exist. Done means the preview provides a button that toggles the basemap without hiding the data being viewed.

Written by the indexing model from the issue text.