GetZoneStatsData and GetZoneStatsV2's netspeed_active values can
exceed 2 billion, causing 32-bit integer overflow. Changed from
int32/uint32 to int (64-bit on modern systems) to handle large
network speed totals.
- Update sqlc column overrides to use int type
- Fix type compatibility in dnsanswers.go zoneTotals map
- Regenerate database code with new types
Fixes https://community.ntppool.org/t/error-message-displayed-on-the-monitoring-score-page/4063
