[Feature Request]: Support practice questions on the Android app

[seanlip]

Is your feature request related to a problem? Please describe.

We implemented a Practice tab in the topic pages of the Android app, but turned it off because, at the time, practice questions didn't yet exist for the topics we were providing. Now that practice questions have been created for our core math topics (example), we would like to turn it on again, because it is helpful for learners to be able to practise skills after learning a new topic so that they can develop mastery.

The aim of this issue is to turn on this functionality in the Android app and make any necessary adjustments to it so that it can be launched.

Describe the solution you'd like

Roughly, bringing this functionality to users involves 4 steps:

• Turn on the existing practice questions functionality on Android, and do a verification (by developers) that the functionality works and that it is accessible and playable.
• Launch this functionality on alpha so that the product team can audit it (both the entry-point to practice questions and the functionality itself).
• The product team should then do a gap analysis to determine what other improvements are needed before the feature can be launched, filing design/implementation issues for specific bugs as needed.
• Once all prerequisites have been completed for the feature to launch, launch the feature.

Important Note: We should also verify that it is possible to turn practice questions on and off on a per-topic basis. On Web, there is a toggle in the topic editor page that determines whether to show practice questions for that topic or not, and that toggle can be used to determine whether or not to show the Practice tab for that topic in the Android app. This functionality is necessary because, from previous experience, practice question development can sometimes lag the creation of new topics.

Describe alternatives you've considered

No response

Additional context

No response