Fix default parameters for setDetails()

[dahlie]

Description

This PR is a small bug fix for how the default parameters are handled in setDetails() function. With the existing implementation, it is possible that this.coordinateList gets overridden with [] since it is not a nullish value.

Related Issue

#4052

Motivation and Context

This fix will make accessibility layer

How Has This Been Tested?

Unit tests are passing and Storybook story works as expected. Change is rather small so I'm not sure if a unit test for reproducing the issue is needed (it was a bit of a corner case anyways), but let me know if the tests should also be updated.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• I have added a storybook story or extended an existing story to show my changes
• All new and existing tests passed.

[ckifer]

Thanks for contributing!