[Feature]: Update package exports to include "Overlay Timer" in default import

[cuberoot]

Code of conduct

• I agree to follow this project's code of conduct.

Impacted component(s)

Overlay

Expected behavior

A minor issue, but I came across some of our code that uses the overlay timer directly and it isn't exported from the project.

I would expect to be able to do:

import { OverlayTimer } from '@spectrum-web-components/overlay'

Actual behavior

Right now we are referencing it via src

import { OverlayTimer } from '@spectrum-web-components/overlay/src/overlay-timer.js'

Screenshots

No response

What browsers are you seeing the problem in?

No response

How can we reproduce this issue?

1. Go to '...'
2. Click on '....'
3. Scroll to '....'
4. Check console
5. See error

Sample code that illustrates the problem

No response

Logs taken while reproducing problem

No response

[Westbrook]

Closing as not needed. We may surface timing functions in a different way in future Overlay API iterations.