Exmpt aria txt unit texts

exmpt: update on dataset side panel ui issues

chore: (un)fixed back btn
chore: added region info to ds sidenav

Bugfix mesh not loading x not removing layer

[exmpt] change dataset layout

expmt: regional features redesign

bugfix: ready probe

feat: ieeg regional features

bugfix: show only relevant regions in other tmpl spaces

Fix connectivity coloring

Fix region exploring for Julich brain 2.4

... regionInOtherTemplateSelector beahviour