Invalidate a loader if a nested loader has been invalidated

[posva]

From Discord

On the one hand, if you were not using data loaders, in Pinia Colada, we would define a key in a hierarchical way ['parent', 'child'] and ['parent'] if the query of the former depends on the later.
On the other hand, is there a reason not to automatically refetch the loader if it uses a nested one that isn't fresh anymore?