Create integration test for Project API Endpoints

[dannyprikaz]

Overview

Create integration tests for all project API endpoints

Action Items

• Create integration tests for all project API endpoints (see ./backend/routers/projects.router.js)
• If you run into any questions, add a comment to the issue and tag "@dannyprikaz"

Resources/Instructions

• https://jestjs.io/docs/getting-started
• For an example, please view 1935 user integration test #1945
• This issue is part of the epic: Epic: Write new backend integration tests for router-controller-model flow #1899