Keeping accessibilityAttributeNames because it calls additionalAccessibilityAttributeNames
which is used by subclasses.
Differential Revision: https://phabricator.services.mozilla.com/D77335
We need to do this because we can't rely on the main children cache invalidation.
Also, I don't think this really worked before with cell additions to a row, since only
the row's children would be invalidated, and the table's children would remain untouched.
Differential Revision: https://phabricator.services.mozilla.com/D69879
--HG--
extra : moz-landing-system : lando
Eitan Isaacson
Morgan Reschenberg
Frédéric Wang