onWillUpdateProps called on destroyed component

[ged-odoo]

https://odoo.github.io/owl/playground/#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

The issue seems to be that when we destroy a component, we don't remove the current fiber, if any. In most cases (standard UI update that destroys a component), the new fiber will already traverse the tree and remove it (see cancelFiber), but when we manually destroy an app (or a root i guess) , there may be remaining fibers that will be called.