Render multiple inner blocks in the save wrapper

[luisherranz]

This is a quick fix for #23, so we can continue experimenting with these APIs.

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Obviously, we should not serialize the inner blocks twice, but we'll improve that if/when we propose this in Gutenberg.

[michalczaplinski]

Nice! 🙂

So, just to be clear, with useInnerBlocksProps.save(); it is possible to render the inner blocks multiple times after all...?

[luisherranz]

I think that technically, you are rendering them only once, but you are adding them to the markup twice.

[michalczaplinski]

got it, thanks! 🙁