Simple tidyr::nest() data.frame fails to render

```r
tibble::tibble(x = c(1, 1, 1, 2, 2, 3), y = 1:6, z = 6:1) |>
  tidyr::nest(data = c(y, z)) |>
  repr::repr_html()
# Error in (function (..., row.names = NULL, check.rows = FALSE, check.names = TRUE,  : 
#   arguments imply differing number of rows: 3, 2, 1
```

Related: #71 #155 