message: fix rendering of UNDERLINE inline style in RTE
diff: @@ -30,7 +30,15 @@ const USERNAME_REGEX = /@\S+:\S+/g;
  const ROOM_REGEX = /#\S+:\S+/g;
  const EMOJI_REGEX = new RegExp(emojione.unicodeRegexp, 'g');
  -export const contentStateToHTML = stateToHTML;
  +export const contentStateToHTML = (contentState: ContentState) => {
  + return stateToHTML(contentState, {
  + inlineStyles: {
  + UNDERLINE: {
  + element: 'u'
  + }
  + }
  + });
  +};
  export function HTMLtoContentState(html: string): ContentState {
  return ContentState.createFromBlockArray(convertFromHTML(html));
  