Do not display a metric on the Legend in case the metric is not appearing on the Chart

What is the problem or goal the end user is trying to solve or accomplish?

It's common for customers to have Charts with a lot of metrics that are displayed on the Legend. However, in case a Metric doesn't return any information, its name is still included on the Legend, even though the Metric is not available on the Chart.

How are they solving it currently?

The Legend doesn't offer configuration to solve this currently.

What is the recommended solution by the Customer?

Provide the ability to exclude from the Legend Metrics that are not displayed on the Chart, to keep the Legend list clean.