Step between 0 and 1 produces floating point rounding errors

## Environment
System:
OS: macOS
Binaries:
Node: v22.16.0
npm: 10.9.2

are you using the new architecture?
No (Expo-managed workflow)

which version of react & react-native are you using?
React: 19.1.0
React Native: 0.81.5
@react-native-community/slider: 5.0.1
Expo SDK: 54.0.17

## Description

when using minimumValue of 0, maximumValue of 1, and a step of 0.1, the value returned by onValueChange shows floating-point precision errors. Instead of returning decimal values (e.g. 0.4), it returns e.g. 0.4000000596046448, this can be seen in the value and the markers. Occurs consistently across iOS and Android in the Expo environment.

## Reproducible Demo
```
import React, { useState } from 'react';
import { View, Text } from 'react-native';
import Slider from '@react-native-community/slider';

export default function App() {
const [value, setValue] = useState(0);

return (

setValue(val)}
/>
Value: {value}

);
}
```

## Potential Fix

Round the computed value before emitting it in onValueChange: `value = parseFloat(value.toFixed(6));`
## Workaround
For a temp workaround users can use:
`onValueChange={(val) => setValue(Math.round(val * 10) / 10)}`

Commencez par exécuter la reproduction Expo fournie avec minimumValue 0, maximumValue 1 et step 0.1 sur iOS et Android. Suivez l’endroit où onValueChange reçoit la valeur calculée, puis vérifiez que les valeurs émises et les marqueurs affichés utilisent les pas décimaux attendus sans artefacts de virgule flottante.

Rédigé par le modèle d'indexation à partir du texte de l'issue.