Merge pull request #6660 from KDSBrowne/2.2-accessibility-minor-update

...n-html5/imports/ui/components/breakout-room/component.jsx

...ton-html5/imports/ui/components/breakout-room/styles.scss

...ebutton-html5/imports/ui/components/nav-bar/component.jsx

...s/ui/components/nav-bar/recording-indicator/component.jsx

bigbluebutton-html5/imports/ui/components/poll/component.jsx

...tml5/imports/ui/components/poll/live-result/component.jsx

.../components/presentation/presentation-toolbar/styles.scss

...presentation/presentation-toolbar/zoom-tool/component.jsx

...rts/ui/components/video-provider/video-menu/component.jsx

bigbluebutton-html5/private/locales/en.json