message: Fix suppression when message is empty
diff: @@ -89,6 +89,7 @@ export function createMessageContent(
  const htmlPrefix = isReply ? getHtmlReplyFallback(editedEvent) : '';
  content.formatted_body = isEditing ? `${htmlPrefix} * ${formattedBody}` : formattedBody;
  + }
  if (isEditing) {
  content['m.new_content'] = {
  @@ -98,7 +99,6 @@ export function createMessageContent(
  'formatted_body': formattedBody,
  };
  }
  - }
  const newRelation = isEditing ?
  { ...relation, 'rel_type': 'm.replace', 'event_id': editedEvent.getId() }
  