Elementor 3.5 API changes

[nickzou]

Hello,

there's been a bunch of deprecations in the 3.5 release and these stubs no longer reflect the current state of the API. List of full changes: https://developers.elementor.com/v3-5-planned-deprecations/

[arifpavel]

Hi @nickzou
Thanks for pointing it out.
I don't really have time to update this at the moment. (maybe in the future).
But, any PR will be much appreciated!