[UI] As a logged-in user, if I fail to submit my answers to the survey questions, I see an error popup

## Why

When the user taps the "Submit" button and fails to submit their answers to the survey questions, they can see an error popup.

## Acceptance Criteria
- If the API returns an error, the user will see a native error modal alert. The title will be `Unable to submit`. The message will be `Something went wrong. Please try again!` and a confirm button with the title `OK`.