fix(explorer): lowercase address in tx-only history query

[oxJean]

fix(explorer): lowercase address in tx-only history query

summary

The transaction-only address history page returns an empty list for any
address that contains a hex letter (a–f), even when that address clearly has
transactions. The summary counter on the same page shows a non-zero number,
so the UI ends up claiming "N transactions" above an empty table.

root cause

fetchAddressTxOnlyHistoryPageWithJoins built its WHERE clause directly from
params.address:

txs."from" = '0xAbC...'   -- checksummed, mixed case

Indexed addresses are persisted lowercased (see indexedAddress), and every
other query in this module — including the companion count query
fetchAddressDirectTxCount — normalizes through indexedAddress(params.address)
first. This one query was the only path that compared against the raw,
EIP-55-checksummed value coming out of zAddress(), so the equality never
matched a stored row.

fix

Normalize once at the top of the function and use the lowercased value in the
WHERE builder, matching the rest of the file:

const address = indexedAddress(params.address)
const whereForSide = (side) => [`txs."${side}" = '${address}'`, ...filters].join(' AND ')

No behavior change for all-lowercase addresses; mixed-case addresses now resolve
their transactions correctly and the list matches the count.