do not destroy new components with equivalent props if rerendered before being mounted

[ged-odoo]

While a template is being rendered, if Owl finds a new child component, it will create it.

<div>
    <C />
</div>

Now, if later (but before animation frame) the parent component is re-rendered, Owl will create a new RootFiber. To do this, it will check for the current rendering, and cancel all the current fibers. This will in turn destroy the new instance of C, because C has not been mounted yet.

This makes sense usually, because the sub component has been willStarted, and we don't want to execute onWillStart twice. However, in our case, C has no props. So, it would make sense to keep the same instance in this case (same applies for components with equivalent props).