fix: improve onChange callback performance

[haivle]

• Only call onChange callback when inViewport value changed
• Fix the issue with incorrect measures on Android
• Add onChange to useEffect dependency to allow the callback function to update its scope

Example

const [count, setCount] = useState(1);

useEffect(() => {
   setCount(2)
},[])

const handleViewPortChange = (isInViewport: boolean) => {
    console.log(count) // --> issue: always return 1
}

<ViewPortDetector onChange={handleViewPortChange}>
  {//...children}
</ViewPortDetector>