Merge branch 'improve-polls' into 'develop'

Block button on polls

See merge request soapbox-pub/soapbox-fe!1511

app/soapbox/features/compose/components/poll-form.tsx

@@ -177,6 +177,7 @@ const PollForm = (props: IPollForm) => {
               theme='secondary'
               onClick={handleAddOption}
               size='sm'
+              block
             >
               <FormattedMessage {...messages.add_option} />
             </Button>