Remove PureRenderMixin

Proprietary

Removes PureRenderMixin from React.createClass mixins and adds an explicit shouldComponentUpdate method.

org.openrewrite.react.refactoring.pure-render-mixin
mod run . --recipe=org.openrewrite.react.refactoring.pure-render-mixin

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.