Listen to children's change in `src=`

[lourot]

<ImageDisplayControl>
  <Image src=... />
</ImageDisplayControl>

In case the child's src= is constructed for example based on its state, updated later asynchronously by a useEffect(), we (the parent <ImageDisplayControl>) won't notice the change, and so we won't fetch the new image regions corresponding to the new image.

How to solve this? With a MutationObserver? With some kind of subscription to the children's React states?