[Feature] Add a test for SetURLUtm utility function

[mbifulco]

User Story

n/a, really - this is more of a tech debt task

This issue is to track the work around having a test written for setUrlUtm in /src/utils/urlUtils.js. We had a production failure today due to some incomplete fallback cases written for that function

Acceptance Criteria

• Test coverage should reach setUrlUtm
• Tests should pass
• setUrlUtm should be linted - I'm not sure it is being checked right now.

Is your feature request related to a problem? Please describe.

On 7/19/2020, we had reports of the /business page crashing for some users who were trying to load certain data in the Safari browser. This was hotfixed in #309, but no tests were written.

Describe the solution you'd like

A good test case (or cases) for the above function, and any needed code changes to the function itself!

[juanri0s]

Is this task open for me to pickup? I'd like to get some tests going here 😄

[magnificode]

All you @juanri0s!

[magnificode]

@juanri0s - were you able to make any headway here sir?