fix markdown measurement with tables

[gavin-ts]

          Oh!

forced sample; https://play.d2lang.com/?layout=dagre&script=nJJNbsMgEIX3PsWUC_DjXQVzhZ4Be5BrFWOLjheRfPgI41iJkmzCiuHxPeAxP79f37BN1ABY9l0MULN2QgvoQ4z_5WlpcELVevFER407lNEyQTfsobplTH9InoOVTM9KP6-JqyQ53xmgUcZIbWSrT9LHcUgul09Brd5RrdTyZFCrlxsPrz4kDhl5Zh9PxJYGgHpJkQMJ1OW0soqPXnJPCJvbAKB1mi4AH8y25hoAAP__&

Originally posted by @bo-ku-ra in https://github.com/terrastruct/d2/issues/551#issuecomment-1367083541

[bo-ku-ra]

this issue is about vertical. the horizontal issues are #517, #513, and #749.

[bth8939]

Hello,

Any news for this issue please ? Thanks

[bo-ku-ra]

Scale multi-width unicodes #817

[alixander]

@bo-ku-ra is that related to this?

[bo-ku-ra]

d2 tends to be correct in height, provided the width is correct, as I have experienced. but you say so. i was wrong.