fix: <Table> <td> key prop error (#693)

* chore: table header flag

* feat: add table header preview

* chore: table cell node and props

* chore: table cell normalizer

* chore: preview table with table cell rows

* chore: table sub node cell

* chore: table cell normalizer as text

* chore: format files

* fix: add table as node

* feat: add table.cell to pages

* feat: support table.cell props for render

* chore: table.cell props for preview

* chore: format files

* feat: add table cell margin support

* feat: table cell margin preview

* chore: format files

* style: improve table sample

* chore: fix comments

* fix: preview table td key prop

* fix: preview table td key prop

* chore: revoke slide object key

src/preview/Preview.tsx

@@ -379,10 +379,10 @@ const SlideObjectPreview = ({
           <tbody>
             {object.rows.map((row: InternalTableCell[], i: number) => (
               <tr key={i}>
-                {row.map((cell: InternalTableCell) => {
+                {row.map((cell: InternalTableCell, j: number) => {
                   return (
                     <td
-                      key={i}
+                      key={`${i}-${j}`}
                       style={{
                         ...getTextStyleForPart(
                           cell.style,