Allow 7702 addresses to recieve funds

[lightclient]

Currently there is a ban on contract accounts receiving faucet funds based on this heuristic:

PoWFaucet/src/eth/EthWalletManager.ts

Lines 282 to 284 in ecdad2a

	public checkIsContract(addr: string): Promise<boolean> {
	return this.web3.eth.getCode(addr).then((res) => res && !!res.match(/^0x[0-9a-f]{2,}$/));
	}

I think it should be updated to allow contracts with the 0xef0100 prefix.

[pk910]

Heya @lightclient,

I don't get why I need to whitelist the delegation prefix here?
As far as I understood 7702, this special code is only used while executing the transaction that holds the authorization and is cleared afterwards?
So the account should not have any code attached after execution completed, right?

If that's right, no account can ever have that code prefix for static calls (as it's not within a transaction execution context)..

[lightclient]

No the code is set permanently!