Chart legend display issues in dark mode
The chart legend component has some display issues in dark mode. There is a gradient fade overlay when content scrolls which always displays in white:
![image](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
The tabular layout variant of chart legends has the same fade overlay issue, and also has row striping which needs adjusting:
![image](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)