chore: Add correct type casts to eip7594 functions

[kevaundray]

cc @hwwhww

This PR resolves all of the errors for eip7594.

I applied a workarounf for the error error: Invalid base class "List" -- Happy to revert if there is a better solution.

[kevaundray]

The invalid base class error comes from ExtendedMatrix | List[Cell, MAX_BLOBS_PER_BLOCK * NUMBER_OF_COLUMNS]

I suspect that the issue arises because the size of the list is not a literal

[kevaundray]

I've removed the check from the CI, since this PR is very prone to having merge conflicts. There seems to be an underlying issue that I've yet to investigate (CI timing out)

[ralexstokes]

is this PR still active? or can we close for being stale? looks like the problem this PR addresses has been handled in other ways since?

[kevaundray]

is this PR still active? or can we close for being stale? looks like the problem this PR addresses has been handled in other ways since?

I've merged in most of the changes for this in separate PRs, we haven't enabled type casts because the CI kept timing out (happy to close and re-open a new PR when I have more time to investigate the typing issue -- the code has been updated since)

[Aga92-92]

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[Aga92-92]

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