fix(apiquery): encode float32 query values at float32 precision

[latent-9]

internal/apiquery/encoder.go formats both reflect.Float32 and reflect.Float64 values with strconv.FormatFloat(..., 64), so float32 query parameters are serialized with float64 noise, e.g. 43.76 becomes 43.7599983215332. The sibling internal/apiform/encoder.go already splits the two kinds; this makes apiquery match. Query tests pinned to the noisy output are updated to the exact value.