Codemod deprecated React APIs

Summary: Performed with `react-codemod rename-unsafe-lifecycles`. I'll taskify the components next. This change means that things will still work with React 17 but only if we opt-out from "strict mode".

Reviewed By: mweststrate

Differential Revision: D18810459

fbshipit-source-id: 6954f4e7bb91dbd7fc8b839895308fc193cc4aa0

src/plugins/sections/Tree.js

@@ -212,7 +212,7 @@ export default class extends PureComponent<Props, State> {
 
   treeContainer: any = null;
 
-  componentWillReceiveProps(props: Props) {
+  UNSAFE_componentWillReceiveProps(props: Props) {
     if (this.props.data === props.data) {
       return;
     }