Collapsible group expand down

[liambarnes]

Is your feature request related to a problem? Please describe.
The renderer implements this extension - https://build.fhir.org/ig/HL7/sdc/en/StructureDefinition-sdc-questionnaire-collapsible.html.
When expanding a collapsible group from the top of the page it expands downwards. When expanding a group part way down the page, it expands upwards. When a user is completing a form, opening a collapsed group requires them to scroll to the top of the group. This is demonstrated with the clinical history summary section in the attached video.

ExpandUp.mp4

Describe the solution you'd like
This request is to make collapsible groups always expand downwards for better user experience.