Consider adding a textual hint to `withSizeLimit` to aid users debugging where the limit is

With #2185 there are even more ways how the entity size limits can be set. The default `EntityStreamSizeException` that is thrown by `Limitable` tries to give the user a hint how to change the limit but isn't precise in where it came from. Maybe this could be improved.

Start by reading Limitable and the EntityStreamSizeException mentioned in the issue, then review the additional entity-size-limit paths introduced by #2185. The change is complete when the exception hint identifies where the active limit came from and helps users choose the relevant way to change it.

Written by the indexing model from the issue text.