rpcdaemon: `ots_searchTransactionsBefore` includes contract creations for zero address search

[sealer3]

Note: This issue similarly affects ots_searchTransactionsAfter.

Sending this RPC call to Erigon returns transactions that include contract creations which do not interact with the zero address:

{
	"id": 238,
	"jsonrpc": "2.0",
	"method": "ots_searchTransactionsBefore",
	"params": [
		"0x0000000000000000000000000000000000000000",
		0,
		25
	]
}

Note that in these tests, the zero address is also the fee recipient.