Missing feedback in curated explorations

[Vir-8]

Currently, curated explorations have a problem of feedback being missing even though the misconceptions for which the feedback has to be provided are often known.

We need to -

• [ ] Make sure all curated explorations have complete feedback (all misconceptions are addressed).
• [ ] Once done, file an issue on the tech Github (https://github.com/oppia/oppia) for turning on validation for missing feedback.

Note: This can only be done once misconceptions are visible for curated explorations on the https://oppia.org server, as shown in the image below.

[Kebith]

The lessons team has an updated checklist we tick to make sure all misconceptions are properly addressed with detailed feedback. Would have been helpful if you pointed our attention to the particular lessons affected, but regardless, the lessons team will do a total revew of the lessons in the future.