debugging: dev/qa only: Add an "Expand all sections for debugging" link/button to gene pages

[bobular]

Some bugs only appear when users expand a particular section.

As developers we often keep most sections collapsed for speed and to be kind to our servers.

If we add a new link (dev and qa only!) that expands all sections, we could at least catch any egregious runtime JavaScript errors.

Should this be on by default and configured OFF in production sites, probably via a flag in ApiCommonWebsite/Model/lib/conifer/roles/conifer/vars/ApiCommon/production/default.yml ?

[aurreco-uga]

pls check #1578 (per scrum jan 6 2026 we decided to try a simpler approach see if it is enough we can reevaluate if not)