[Svelte] Add auto update method to use:inertia

[pedroborges]

Add update method to the use directive. This ensures options are updated when the directive parameters are dynamic.

[reinink]

I don't know what this means, but trust you know what you're doing here @pedroborges. 😂

[pedroborges]

Yeah, it makes sure options inside the directive action can be updated in case it's dynamic and not a static object.