[PS-1793] Desktop/Browser/Web: tweak disclosure widget design (#3951)

* 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

bitwarden_license/bit-web/src/app/organizations/manage/sso.component.html

@@ -236,8 +236,8 @@
             class="bwi"
             aria-hidden="true"
             [ngClass]="{
-              'bwi-angle-down': !showOpenIdCustomizations,
-              'bwi-chevron-up': showOpenIdCustomizations
+              'bwi-angle-right': !showOpenIdCustomizations,
+              'bwi-angle-down': showOpenIdCustomizations
             }"
           ></i>
         </button>