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.

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Note

Low Risk
Localized serialization fix in apiquery encoding with test-only expectation updates; float64 behavior is unchanged.

Overview
float32 query parameters are now serialized with 32-bit strconv.FormatFloat instead of sharing the float64 path, so values like 43.76 no longer appear as 43.7599983215332 in encoded query strings.

This mirrors the existing split in internal/apiform/encoder.go. Encoder tests that pinned the old noisy e= output are updated to expect the rounded float32 representation.

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