Remove “save” button from ORA submissions

[e0d]

Removed the save button in favor of ubiquitous auto save to reduce learner confusion where save and submit were conflated.

[e0d]

This work was a refinement of the suggestions captured in a general UX review. Will remove from the original ticket.

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Opening as a Roadmap item as issues are not currently enabled on the ORA2 repository. Will use this issue to capture UX opportunities for input from the practitioner team.

This is the student view of a simple ORA.

1. I think that the prompt element looks to similar to a form element and slows down time to orient to the question.
2. Can we have responses autosave and remove the button.
3. The most important learner action, submitting, feels buried under other information.

[mavidser]

This seems to have been implemented by #1981