Display a clearer error message when the private key passed to the addr cheatcode is greater than the secp256k1 curve order

[PaulRBerg]

Component

Forge

Describe the feature you would like

The order of the secp256k1 curve is a little bit smaller than 2^256, which means that not all uint256 values can be used as private keys. The order has this value:

0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141

Currently, when we pass a value greater than this to the vm.addr cheatcode, we got the following error:

signature error

It would be nice to display a clearer, more specific error, to let users that what happened is that the private key is greater than what is permitted by secp256k1.

Additional context

It is quite easy for a user to end up passing a value greater than the curve order:

1. Fuzz the private key as an uint256 argument in a test function
2. Use the vm.addr cheatcode to generate an address from the fuzzed private key