ItemsComponentModel useranswers save/restore not index aware

[oliverfoster]

Subject of the issue

_index is created but save/restore do not utilise. this can cause issues on restoration:

adapt-contrib-core/js/models/itemsComponentModel.js

Lines 23 to 39 in 6904446

	restoreUserAnswers() {
	const booleanArray = this.get('_userAnswer');
	if (!booleanArray) return;
	this.getChildren().forEach((child, index) => child.set('_isVisited', booleanArray[index]));
	}
	storeUserAnswer() {
	const booleanArray = this.getChildren().map(child => child.get('_isVisited'));
	this.set('_userAnswer', booleanArray);
	}
	setUpItems() {
	// see https://github.com/adaptlearning/adapt_framework/issues/2480
	const items = this.get('_items') || [];
	items.forEach((item, index) => (item._index = index));
	this.setChildren(new Backbone.Collection(items, { model: ItemModel }));
	}

[oliverfoster]

🎉 This issue has been resolved in version 6.45.6 🎉

The release is available on GitHub release

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