* wip

* more feedback

* some cleanup

* move things out of paneview.ts

* dragging within a view pane container

* moving composites within and views across

* drag full composites to panel

* move composites between both

* moving views to composites

* dragging single view composite into view pane

* fix orienation for overlay

* quick cleanup before check in

Via arrow right or mouse middle button.

Also replaces a weird use of `.bind` that was causing issues with the update. I've tried to refactor the code to preseve the existing behavior

fixes #92324

list: improve aria-selected to be set on each selected element. Set aria-multiselectable when mutli selct is supported