iOS: Result Module: Needs to add case for Null Result

Description: Program ID: 17554
Program Name: NPC:TEST:Multiple Results

Steps to reproduce:
1. For the above program, answer all the questions with a 3 or below
2. Select Next
3. On the results, notice that the module is not formatted to handle a null result.

Expected behavior
Null Results message is presented to the user if answered questions result in a null state

Actual behavior
If answered questions end up with a Null state for the result, the user is presented with a blank unformatted result card

*See attached screen shot
*See iOS Result Module designs in Zeplin for Null State
Owner: Jordan Fray