Chart: add show_legend toggle, document it, and add e2e test
#1546
| Job | Run time |
|---|---|
| 1m 33s | |
| 1m 33s |
show_legend toggle, document it, and add e2e test
#1546
| Job | Run time |
|---|---|
| 1m 33s | |
| 1m 33s |