The authors apologise that a funding acknowledgment statement was not given correctly in the originally published piece. The statement below has been added to the published article:
“E.M. has been partially supported by the European Union - Next Generation EU, Mission 4, Component 1, CUP D53D23005860006, within the project PRIN 2022L34E7W “Moduli spaces and birational geometry” and both authors are members of GNSAGA, INdAM.”