* Move chevron/arrow to start of disclosure widget
in addition, changes the only expand/collapse disclosure widget like this on the web client to use the same `<h3><button>...</button></h3>` structure as on browser extension and desktop app
* Change collapsed/expanded icons
Make them more understandable and consistent with other expand/collapse controls
* Harmonise desktop +/- controls to use arrow/chevron icons as well
also removes the incorrect `A11yTitle` in the generator that currently overrides the visible "Options" text (leading to a failure of WCAG 2.5.3 Label in Name)
* Change the icons for the expand/collapse disclosure widget in SSO component
* Expand icon explanation
plus minor typo cleanup
* Add patch for Send button focus outline
