cmd/geth: add support for --dev flag in dumpgenesis (#28463)

Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: lightclient <lightclient@protonmail.com>

eth/catalyst/simulated_beacon_test.go

@@ -85,7 +85,7 @@ func TestSimulatedBeaconSendWithdrawals(t *testing.T) {
 
 	// short period (1 second) for testing purposes
 	var gasLimit uint64 = 10_000_000
-	genesis := core.DeveloperGenesisBlock(gasLimit, testAddr)
+	genesis := core.DeveloperGenesisBlock(gasLimit, &testAddr)
 	node, ethService, mock := startSimulatedBeaconEthService(t, genesis)
 	_ = mock
 	defer node.Close()