Fixes#9246. Custom default root views (account and dashboard) were not
being properly thread to the custom component renderer. Custom account
views were also improperly _stacking_ instead of _replacing_ the default
view.
Tests for this are incoming. To properly test this we need to wrap our
default root views with custom ones, so that out existing `admin` test
suite can continue to work alongside tests specifically for this issue.
c4269d25d3