Collapsible Segment optionally show the expand toggle

Sometimes we need to render a collapsible section with 0 items in the body but still need the segment to show (eg if there is a button on it).
If that is the case I don't think we should render the expand toggle as it is misleading and doesnt' do anything. We could add a prop to teh segment to control if it is rendered or not

Eg for this ui on workflows

# Feature request
## Prerequisites
**This is just a checklist, please delete this section after**
Please answer the following questions for yourself before submitting a feature request.
- [ ] I checked to make sure that this feature has not already been suggested
- [ ] Please label as, low / medium / high priority

*Please fill in as much detail as possible*

## Is your feature request related to a problem?
*A clear and concise description of what the problem is*

## Describe the solution you'd like
*A clear and concise description of what you want to happen.*

## Describe alternatives you've considered
*A clear and concise description of any alternative solutions or features you've considered.*

## Additional context
*Add any other context or screenshots about the feature request here.*