`algo` indent guides break for line-wrapped text

[platformer]

In algo, if the text on a particular row line wraps, the indent guides for that row will not extend far enough.

#algo(
  title: "Floyd-Warshall",
  parameters: ("V", "E", "w"),
  indent-guides: 1pt + black,
)[
  Let $"dist"[u,v] <- infinity$ for $u,v$ in $V$\
  For $(u,v)$ in $E$:#i\
    $"dist"[u,v] <- w(u,v)$ #comment[edge weights] #d\
  For $v$ in $V$:#i\
    $"dist"[v,v] <- 0$ #comment[base case] #d\
  \
  For $k <- 1$ to $|V|$:#i\
    For $i <- 1$ to $|V|$:#i\
      For $j <- 1$ to $|V|$:#i\
        #comment(inline: true)[if new path is shorter, reduce distance]\
        If $"dist"[i,j] > "dist"[i,k] + "dist"[k,j]$:#i\
          $"dist"[i,j] <- "dist"[i,k] + "dist"[k,j]$\
          blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah#d#d#d#d\
  \
  Return $"dist"$
]

[platformer]

This issue occurs because indent guides are drawn based on the height of the content on the given line. However, there is no simple way to tell if that content is line wrapped (calls to measure assume infinite available width). This issue could be resolved if Typst's layout function is updated to return the actual size of a table cell.

This issue could also be resolved if tables supported arbitrary cell borders, because then I wouldn't have to deal with measure to draw indent guides of the correct length. There is an experimental branch that uses tablex to achieve this: https://github.com/platformer/typst-algorithms/tree/tablex. However, there are various bugs that prevent this branch from being merged. I'll revisit this issue once tablex hits v0.1.0.