Instantiate Label validation error is misleading

[chipshort]

When the instantiate msg's label is validated, the error it returns is thrown away and instead a "label is required" is thrown.
This is confusing for the contract author, since they provided a label, but an invalid one, with no indication of what is wrong with it. This is the case for Instantiate, Instantiate2 and StoreAndInstantiate.

I think the error from ValidateLabel should be wrapped / returned instead.

Original issue