✨(tree-view) load children on keyboard navigation and simplify toggle

[Ovgodd]

Fix TreeViewItem keyboard toggling for child nodes: children has to load when toggling via keyboard.
Refactors arrow click to use node.toggle() instead of handleClick.

The issue in docs app is that fold/unfold via keyboard don’t work initially when multiple subdocs are present, a mouse click is required first before keyboard toggling became functional.

See: suitenumerique/docs#1388

[AntoLC]

Not your fault, but without test suite it is quite complicated to test the patch, we have to modify Story book to succeed to create the perfect environnement.

Hard to see if we don't introduce regression as well.

[AntoLC]

We can remove totally the function handleClick, inside handleOver you can replace void handleClick(); by node.open();. We don't need to memoized handleOver neither, it can directly go inside the useEffect under I think.

[Ovgodd]

Yes, you’re right.

In this case, useCallback isn’t needed.
We can put the logic directly in the useEffect.

Another thing : React 19’s compiler will help with memoization in many cases, so we don't need memoize function for many cases,

good catch

[Ovgodd]

Not your fault, but without test suite it is quite complicated to test the patch, we have to modify Story book to succeed to create the perfect environnement.

Hard to see if we don't introduce regression as well.

I agree, test suites will be nice

[AntoLC]

Should be under unreleased like for Docs.

Suggested change

## 0.16.2

[AntoLC]

I think it is better pattern to do like that.

Suggested change

	if (timeoutRef.current && !isOver) {
	clearTimeout(timeoutRef.current);
	}
	return () => {
	if (timeoutRef.current) {
	clearTimeout(timeoutRef.current);
	}
	};