row_group_as_column = TRUE with LaTeX and 2 groups doesn't show borders correctly

[olivroy]

---
format: pdf
---

```{r}
# dev gt
library(gt)

exibble |>
  dplyr::group_by(group, row) |>
  gt(row_group_as_column = TRUE)
```

@kbrevoort I wonder if you knew how to fix this?

Also instead of having a little vertical border for each row in the stub, would it be possible to tweak it to have a continuous vertical line for the stub (after the first column)?

[kbrevoort]

@olivroy I've been working on adding border control in Latex and I'm close to being done. The code is written, but testing surfaced some issues I need to fix before submitting a PR. It addresses the gaps in the vertical lines you mention here and does a lot more. (You're going to like this one, @rich-iannone!)

Unfortunately, I have some day-job-related projects that I need to finish by the end of September that I need to do first. So, I may not get around to finishing the PR until early October.

[olivroy]

@kbrevoort this is excellent news! Looking forward to the PR! #1712