message: insert table with no extra text
diff: @@ -1815,12 +1815,17 @@ function createTable(pos: number, flowView: FlowView, nrows = 3, nboxes = 3) {
  SharedString.ReferenceType.NestBegin, ["table"]));
  pos++;
  for (let row = 0; row < nrows; row++) {
  + let popBox = false;
  let rowId = idBase + `row${rowIdSuffix++}`;
  opList.push(createMarkerOp(pos, rowId,
  SharedString.ReferenceType.NestBegin, ["row"]));
  pos++;
  for (let box = 0; box < nboxes; box++) {
  + if (popBox) {
  pos = createBox(opList, idBase, pos, content[(box + (nboxes * row)) % content.length]);
  + } else {
  + pos = createBox(opList, idBase, pos);
  + }
  }
  opList.push(createMarkerOp(pos, endPrefix + rowId,
  SharedString.ReferenceType.NestEnd, ["row"]));
  @@ -1874,8 +1879,13 @@ function createTableRelative(pos: number, flowView: FlowView, nrows = 3, nboxes
  opList.push(createRelativeMarkerOp(endTablePos, rowId,
  SharedString.ReferenceType.NestBegin, ["row"]));
  pos++;
  + let popBox = false;
  for (let box = 0; box < nboxes; box++) {
  + if (popBox) {
  createBoxRelative(opList, idBase, endTablePos, content[(box + (nboxes * row)) % content.length]);
  + } else {
  + createBoxRelative(opList, idBase, endTablePos);
  + }
  }
  opList.push(createRelativeMarkerOp(endTablePos, endPrefix + rowId,
  SharedString.ReferenceType.NestEnd, ["row"]));
  