AreaChart:With steps, fmt and labels

Build 463 on vercel-docs-redirects
1200px
Reviewing disabled
Baseline History
Build 463ac0b7a3
Current build. There are unaccepted changes, so build 367 is still the baseline.
Build 36739ac076 current baseline
Accepted by Zach Stence.
Build 3653fd43b3
Accepted by Zach Stence.
Build 356ef3dd43
Accepted by Zach Stence.
Build 3525e4f34e
Accepted by Zach Stence.
Commenting is disabled because there's a newer build on this branch