Arbitrum has its own custom implementation for GasPrice opcode.
See Arbitrum's PR.

In my suggested modifications here, the virtual machine warmup RunOpCodes will not have the updated GasPrice opcode. To have it, I would need to override the whole VirtualMachine.WarmUpEvmInstructions();, which seems a bit overkill. Let me know it's still better to have the update there too.

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