Statistics Card - Option to hide legend

[alexpomsft]

When plotting three or more statistics the legend can get overwhelming when also displaying min, max, mean, etc. It would be great if we could hide the legend. Alternatively it would be great show the legend but only have one item per statistic added, e.g. just [Kitchen, Living Room, Basement] in the below image.

[karwosts]

Same as #9846 (should be resolved now as well)