chore(test): update fixture project to match the template

[dpogue]

Platforms affected

iOS

Motivation and Context

The test fixture project wasn't kept in sync after refactoring the template project.

Description

Update the test fixture project to match the structure of the template project.

Testing

Unit tests pass.

Checklist

• I've run the tests to see all new and existing tests pass

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.84%. Comparing base (5013f7d) to head (21bd760).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1510      +/-   ##
==========================================
- Coverage   80.95%   80.84%   -0.11%     
==========================================
  Files          16       16              
  Lines        1848     1848              
==========================================
- Hits         1496     1494       -2     
- Misses        352      354       +2     

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