Deprecates `react-animate-height` in favor of native CSS, specifically
the `interpolate-size: allow-keywords;` property which can be used to
animate to `height: auto`—the primary reason this package exists. This
is one less dependency in our `node_modules`. Tried to replicate the
current DOM structure, class names, and API of `react-animate-height`
for best compatibility.
Note that this CSS property is experimental BUT this PR includes a patch
for browsers without native support. Once full support is reached, the
patch can be safely removed.