keyboard tab into detail/summary broken

[danielweck]

See:
focus-trap/tabbable#36

[danielweck]

Test publication:
https://raw.githack.com/cast-org/cisl-demo/master/pubs/cast-lexington-modern/manifest.json
https://raw.githack.com/cast-org/cisl-demo/master/pubs/cast-lexington-modern/lexington-modern.html

[danielweck]

Test publication:
https://raw.githack.com/cast-org/cisl-demo/master/pubs/cast-lexington/manifest.json
https://raw.githack.com/cast-org/cisl-demo/master/pubs/cast-lexington/lexington.html

[danielweck]

Test publication:
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-children-protesting/manifest.json
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-children-protesting/children-protesting.html

[danielweck]

Test publication:
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-eating-meat/manifest.json
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-eating-meat/meat.html

[danielweck]

Test publication:
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-junk-food/manifest.json
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-junk-food/junk-food.html

[danielweck]

Test publication:
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-paper-or-plastic/manifest.json
https://raw.githack.com/cast-org/cisl-demo/master/pubs/serp-paper-or-plastic/paper-or-plastic.html

[danielweck]

Note that opening/collapsing the detail element potentially results in fewer or more pages/extent in the paginated/scrolled views, so the "resize sensor" triggers and we ensure that a "reading location" notification is emitted in order to provide a refreshed calculation of offsets, etc.

[danielweck]

Update: no-change in the external lib, for valid reasons (I agree with the library developer).
So, suggested move: fork his code, and customize to meet our needs. We have the luxury of being "limited" to the Chromium browser engine, so we can make reliable predictions about the level of support for detail/summary in terms of their focusability / tab-ability.
See:
https://allyjs.io/data-tables/focusable.html