Change PropTypes value of renderChatItem from element to func in ConversationScroll comp (#77)

Author: HoonBaek

src/smart-components/App/stories/index.stories.js

@@ -292,6 +292,11 @@ const SBChannel = withSendBird((props) => {
       showSearchIcon={showSearchIcon}
       onSearchClick={onSearchClick}
       onChatHeaderActionClick={onChatHeaderActionClick}
+      // renderChatItem={({ message }) => {
+      //   return (
+      //     <div>{message.message || '하잉'}</div>
+      //   )
+      // }}
       // renderCustomMessage={(message) => {
       //   if (message.messageType === 'user') {
       //     return () => (

src/smart-components/Conversation/components/ConversationScroll.jsx

@@ -288,7 +288,7 @@ ConversationScroll.propTypes = {
     PropTypes.string,
     PropTypes.number,
   ]),
-  renderChatItem: PropTypes.element,
+  renderChatItem: PropTypes.func,
   renderCustomMessage: PropTypes.func,
   scrollToMessage: PropTypes.func,
   useReaction: PropTypes.bool,