Unmarshal to float32 yields different output than encoding/json

Describe the bug

Unmarshaling some values to float32 yields different output than encoding/json.

To Reproduce

Run the following code:

import (
	"encoding/json"
	"testing"

	"github.com/bytedance/sonic"
	"github.com/stretchr/testify/assert"
)

func TestPrecision(t *testing.T) {
	b := []byte("7.328900098800659")
	var js float32
	var ss float32
	_ = json.Unmarshal(b, &js)
	_ = sonic.Unmarshal(b, &ss)
	assert.Equal(t, js, ss) // js == 7.3289, ss == 7.3289003
}

Expected behavior

For sonic to return output exactly the same as encoding/json. I am guessing it is because sonic seems to unmarshal to float64 before casting the value to float32, which somehow seems to give less precision than parsing the value directly to float32.

Sonic version:

v1.14.2-0.20251010110621-72bd4caf6fb6

Environment:

GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/bimoadityar/.cache/go-build"
GOENV="/home/bimoadityar/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/bimoadityar/.go/pkg/mod"
GOOS="linux"
GOPATH="/home/bimoadityar/.go"
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/bimoadityar/.config/spkit/bin/sdk/go1.23.12"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/bimoadityar/.config/spkit/bin/sdk/go1.23.12/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.23.12"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/bimoadityar/Documents/bimo-test-2/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1204808054=/tmp/go-build -gno-record-gcc-switches"