bug: katana not returning correct value for blockhash

[enitrat]

01a7c41

We can't test this properly because katana returns 0 instead of returning a correct value

[ryzen-xp]

Hi Sir ,
I am proficient Blockchain developer expert in Cairo , Rust and Solidity and also in web development.
I have contributed many cairo , rust projects like chainevents , arkprojects , sunshine etc .
Can you Please /assign this issue me.
Thank You