message: Send HTML if there are any entities present in the composer
  This is so that pasted HTML links that are represented as entities are sent as HTML.
diff: @@ -591,6 +591,14 @@ export default class MessageComposerInput extends React.Component {
  }
  });
  }
  + if (!shouldSendHTML) {
  + const hasAnEntity = blocks.some((block) => {
  + return block.getCharacterList().filter((c) => {
  + return c.getEntity();
  + }).size > 0;
  + });
  + shouldSendHTML = hasAnEntity;
  + }
  if (shouldSendHTML) {
  contentHTML = HtmlUtils.processHtmlForSending(
  RichText.contentStateToHTML(contentState),
  