Clarify default 'resolved' vs 'source' value logic in GeneratedFieldExplicitInputUxComponentSourceBase::getClientSideInfo()

I've gone a bit further with the refactoring of ::getClientSideInfo(), several times we initialize one-time variables far away from where we use them so I moved them all closer to their usages, and also reordered some other things that make more sense to me. It's probably best to review individual commits and then the final result as a whole for it to make the most sense.

@longwave took what I did and performed a master class in how to refactor further, step-by-step. The end result is much more readable than what I proposed.

Wonderful, thanks! 🤩👏

Landing this because it's being built on by 📌 ComponentMetadataRequirementsChecker::check() should validate that the example(s) actually match the JSON schema Active , which is in the sprint. At this point, @longwave and I made equal amounts of changes, and clearly this refactoring is helpful in addressing actual bugs, otherwise he wouldn't have started fixing #3507641 on top of this!

Automatically closed - issue fixed for 2 weeks with no activity.