Implement saving block settings forms

This needs 📌 Define `props` in the context of Block components Active to land first.

There is work in 🐛 Some components cannot be used in XB because UI prevents SDC props being named `name` Active that will make this easier. Should we postpone on that too?

I'm not opposed to that at all, but @longwave, @jessebaker and others felt that 🐛 Some components cannot be used in XB because UI prevents SDC props being named `name` Active was too broad in scope to be actionable. If you managed to act on it anyway, all the better! 😄

📌 Define `props` in the context of Block components Active landed!

Also, https://git.drupalcode.org/project/experience_builder/-/merge_requests/3...