Silence usages of componentWillReceiveProps

For https://github.com/vector-im/riot-web/issues/12877

src/components/views/settings/ChangeAvatar.js

@@ -59,7 +59,8 @@ export default createReactClass({
         MatrixClientPeg.get().on("RoomState.events", this.onRoomStateEvents);
     },
 
-    componentWillReceiveProps: function(newProps) {
+    // TODO: [REACT-WARNING] Replace with appropriate lifecycle event
+    UNSAFE_componentWillReceiveProps: function(newProps) {
         if (this.avatarSet) {
             // don't clobber what the user has just set
             return;