v6.0.0-beta.0 requires indexId on <Index>

[coreyward]

There appears to be a transition going on from indexName to indexId, but this is incomplete and not documented. I think the IndexWrapper component was added to make this transition easier, but the PropTypes set for it require both indexName and indexId despite synthesizing the latter from the former:

react-instantsearch/packages/react-instantsearch-core/src/widgets/Index.tsx

Lines 126 to 144 in 35914be

	const IndexWrapper: React.FC<Props> = props => {
	const inferredIndexId = props.indexName;
	return (
	<InstantSearchConsumer>
	{contextValue => (
	<Index
	contextValue={contextValue}
	indexId={inferredIndexId}
	{...props}
	/>
	)}
	</InstantSearchConsumer>
	);
	};
	IndexWrapper.propTypes = {
	indexName: PropTypes.string.isRequired,
	indexId: PropTypes.string.isRequired,
	};

The result of this is PropType errors being displayed on the client inside of downstream applications when running React in development mode.