feat(OpenResponse): Allow authors to specify student-friendly text for ideas

[Aaron-Detre]

Changes

• Added an EditCRaterIdeaDescriptions component to the advanced settings of an Open Response component.
• Made autoscrolling on the idea description authoring component turned on by default but with the option to turn it off since it is unnecessary (and doesn't work properly) in Open Response settings.
• Changed references to "idea name" in EditCRaterIdeaDescriptions to "idea description" because that's a more descriptive name and I think should be less confusing given how CRaterIdea.name is referring to the ID. Also it matches the name of the class now which seems good.
• Made CRaterIdea.detected optional to allow for ideas outside of the context of being detected or not. (I thought it already was optional, but maybe it got changed back or I'm just imagining it?)

Test

• Make sure checking "Enable Student-Friendly Idea Descriptions" opens the EditCRaterIdeaDescriptions component.
• Make sure that unchecking "Enable Student-Friendly Idea Descriptions" hides the EditCRaterIdeaDescriptions component but doesn't delete any created idea descriptions from the JSON.
• Make sure that you can add and delete idea descriptions and that all changes are saved to the JSON.

Closes #2117

[hirokiterashima]

Works as described.

"Idea name" => "Idea description" sounds good.

I'm wondering if we need to even have a checkbox to "Enable Student-Friendly Idea Descriptions". I think every CRater item can (and should) have a rubric going forward, so the idea description component should always be "enabled". Maybe we should alway show the rubric, but let the author to collapse/expand the section since it takes up a lot of vertical space? What do you think?

Also, see my comments inline.

[hirokiterashima]

LGTM. I added minor code improvement suggestions to address before you merge. Remember to test using the pipeline.

[hirokiterashima]

🎉 This PR is included in version 5.174.0 🎉

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