fix: add MessageBody to module exports

[adrian-moovup]

For renderMessageBody to be a viable option to extend upon the default message types, would like to be able to import MessageBody when using the library.

• MessageContent is not customizable with three new optional properties:
  • renderSenderProfile, renderMessageBody, and renderMessageHeader
  • How to use?

    import Channel from '@sendbird/uikit-react/Channel'
    import { useSendbirdStateContext } from '@sendbird/uikit-react/useSendbirdStateContext'
    import { useChannelContext } from '@sendbird/uikit-react/Channel/context'
    import MessageContent from '@sendbird/uikit-react/ui/MessageContent'
    
    const CustomChannel = () => {
      const { config } = useSendbirdStateContext();
      const { userId } = config;
      const { currentGroupChannel } = useChannelContext();
      return (
        <Channel
          ...
          renderMessage={({ message }) => {
            return (
              <MessageContent
                userId={userId}
                channel={currentGroupChannel}
                message={message}
                ...
                renderMessageBody={(props: MessageBodyProps) => (
                  <MessageBody {...props}/>
                )}
              />
            )
          }}
        />
      )
    }

[netlify]

‼️ Deploy request for sendbird-uikit-react rejected.

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🔨 Latest commit	b3f9cf7

[HoonBaek]

Thank you for your interest in our project @adrian-moovup !
It seems that the PR you created can be replaced by this one #1195.
Thank you!

[HoonBaek]

#1195