Fix code coverage

[asg5704]

Description

The code coverage standards currently only applies to applications within vets-website repository and does not include the platform directory in that requirement. Our team should be the standard when it comes to code coverage in platform code.

Tasks

Create a ticket for each of the tasks listed below (reference this ticket and the one created for the tasks in your PRs). Fix code coverage for the following components and utilities

• [ ] downtime.js
• [ ] errors.js
• [ ] selectors.js
• [ ] utilities.js
• [ ] actions.js
• [ ] CreateAccountLink component
• [ ] SessionTimeoutModal (do NOT refactor to web components)
• [ ] SignInModal (do NOT refactor to web components)

How to check code coverage

1. Run yarn test:unit <location-of-unit-test> --coverage --coverage-html
2. Open up the coverage/index.html file in a browser
3. Verify code coverage minimums and refactor as needed

[asg5704]

@acaruso-oddball I added both Caitlin and Ian on this as well. This is the ticket I mentioned that would be a mini-epic and separate tickets will need to be created for each of those files/components.

cc @CaitHawk @ianmagenta

[parkerbees]

Copied to jira, closing here