AreaChart:With steps, fmt and labels

Build 854 on 2131-clean-up-stories-to-fully-enable-chromatic
1200px
Reviewing disabled
Baseline History
Build 854bab0b35
Current build. There are unaccepted changes, so build 852 is still the baseline.
Build 852bab0b35 current baseline
Accepted by Zach Stence.
Build 8426623eea
Accepted by Zach Stence.
Build 834ef3327c
Accepted by Zach Stence.
Build 486b753158
Accepted by Archie Sarre Wood.
Commenting is disabled because there's a newer build on this branch