Use the server setting to get the max number of poll options in UI (#29490)

app/javascript/mastodon/features/compose/components/poll_form.jsx

@@ -58,10 +58,11 @@ const Option = ({ multipleChoice, index, title, autoFocus }) => {
   const dispatch = useDispatch();
   const suggestions = useSelector(state => state.getIn(['compose', 'suggestions']));
   const lang = useSelector(state => state.getIn(['compose', 'language']));
+  const maxOptions = useSelector(state => state.getIn(['server', 'server', 'configuration', 'polls', 'max_options']));
 
   const handleChange = useCallback(({ target: { value } }) => {
-    dispatch(changePollOption(index, value));
-  }, [dispatch, index]);
+    dispatch(changePollOption(index, value, maxOptions));
+  }, [dispatch, index, maxOptions]);
 
   const handleSuggestionsFetchRequested = useCallback(token => {
     dispatch(fetchComposeSuggestions(token));