fix: slot prevents out transition for non-modal dropdown and select components

[MellKam]

resolves: #800

The main change that brought the out transition back was:

if (childrens.length === 1)
	return cloned

Basically unwrap the vnodes array if it only has one element. Idk why this is fixed, but it works XD. I'd like others to look at this, because I'm not really sure about it.

I should probably write a story to showcase this, but I'm lazy right now. I'll get back to it tomorrow.

[zernonia]

Tested out and indeed was the array of vnodes causing the out animation to be missing.
Thanks for the fix and improvement here @MellKam ! That's a brilliant solution! 💚

Not sure what kind of story can we write here, and writing test for animation/transition part is still something I need to figure out lol 😂

[MellKam]

I updated the DropdownMenu story with out animation using tailwindcss-animate plugin.

2024-04-01.15.58.15.mov

I have also tried to come up with some test that would check that animation is going as it should, but no success.

[MellKam]

@zernonia Why do we have the require in the tailwind configs? Is this necessary? If not, I would like to open the separate PR and update all configs to esm only.

[zernonia]

Nice @MellKam ! I thought of adding the tailwind-animate plugin to histoire too!
We can change tailwind.config to esm version 😁