rjsf/core update for optional components

[samjtozer]

rjsf-team/react-jsonschema-form#814 fixes an issue to allow references non-explicit components inside the ui:order key of the uischema object which allows you to explicitly add ordering to conditional components without using the wildcard value. This does not seem to propagate through to this package. Here's an example using rjsf/core: https://codesandbox.io/s/red-fast-x9q0c?file=/src/App.js

If I were to apply the same logic using this package, I get a uiSchema order list contains extraneous property "...". Is this a bug?