julia

2a731a51 - datatype: finish layout corrections (#43306)

datatype: finish layout corrections (#43306) We still had some discrepancies between what the code thought could be computed for a layout, and what we actually could compute layout for. This hopefully makes those two computations now always give the same answers (with the assistance of the layout cache). Fixes #43303 (cherry picked from commit 30fe8cc2c19927cf4b4a5fe1ba1cbf4c2b7b7d84)