[0.7] LocalResources loaded in islands do not trigger Suspense in non-island parents

[Houski]

Describe the bug
Islands do not render in nested components under certain conditions. Everything inside the parent transition appears not to render.

To Reproduce
Run this minimum example repo:
https://github.com/Houski/leptos_07_beta_bug_repros

[gbj]

Okay, the conditions here are specifically:

1. using a LocalResource,
2. in an island,
3. with the Suspense/Transition outside the island

Things that work:

1. putting a Suspense/Transition inside the island, or
2. using a Resource instead of LocalResource

I'm not sure this should break in exactly the way it does, but I can at least explain the intuition for why it doesn't work: Because the Suspense/Transition is outside the island, there is nothing actually shipped to the client that knows how to run the async loading + rendering here. i.e., the client does not have the code that says "Ok, wait for all the data inside this area to be loaded, and then show it," (the Suspense/Transition) but the server does not have the code that says "Ok, wait until you've loaded all this data, then render the HTML" (because you've told it not to load the data by using a LocalResource for the data).

[Houski]

Would it be easy to have it throw an error under those conditions or is there no way for Leptos to derive that structure has occured?

In my case I actually can just make it a regular resource I think. I'm actually not even sure why I have it as local resource. 🤔