can't scan into dest[77]: type assertion to []byte failed

**Describe the bug**
can't scan into dest[77]: type assertion to []byte failed

**To Reproduce**

```go
func (s *matchParticipantsService) GetByGameIDsAndRegion(gameIDs []int64, rgn region.Region) ([]models.LeagueOfLegendsMatchParticipant, error) {
query := `SELECT * FROM lol_match_participants WHERE game_id = ANY($1::bigint[]) AND region = $2`

rows, err := s.pgxPool.Query(s.ctx, query, gameIDs, rgn)
if err != nil {
return nil, err
}
defer rows.Close()

return pgx.CollectRows(rows, pgx.RowToStructByName[models.LeagueOfLegendsMatchParticipant])
}
```

I cannot provide the LeagueOfLegendsMatchParticipant type.

**Expected behavior**
pgx should successfully scan results

**Actual behavior**
can't scan into dest[77]: type assertion to []byte failed

**Version**
- Go: `go version go1.23.3 windows/amd64`
- PostgreSQL: `17.2`
- pgx: `github.com/jackc/pgx/v5 v5.7.2`

The error does not occur when using `github.com/jackc/pgx/v5 v5.7.1`

Start at GetByGameIDsAndRegion and the pgx.CollectRows/RowToStructByName call shown in the report; compare behavior between pgx v5.7.1 and v5.7.2 with the provided PostgreSQL query. The unavailable LeagueOfLegendsMatchParticipant type is needed to reproduce the failure, and done means explaining why v5.7.2 cannot scan one destination and verifying successful result scanning.

Written by the indexing model from the issue text.