43.alpha - 1 July 2022

Web:

* Fix several issues relating to presentation of navigation among
  focusable descendants within ARIA grids and tables

* Improve support for description lists

* Improve presentation of articles in feeds

* Improve presentation of unknown setsize and row/column count

* Fix several "chattiness" issues related to ARIA widgets

* Fix SayAll presentation of time element inside link

* Fix presentation of the FluentUI react dialog (and any other
  dialog which has an ARIA document-role descendant

* Improve performance in large rich-text editors

* Include focusable elements with clickancestor action in the
  list of "clickables"