Addon-docs: Apply transformSource to any SourceType

[phated]

Issue: N/A

What I did

I made the transformSource function (if specified) apply to all SourceType snippets.

While trying to modify the snippets produced for SourceType.DYNAMIC, I noticed that the transformSource option was only being applied to SourceType.CODE snippets. This seems to be due to it being called inside enhanceSource, but the SourceType refactoring came after, so I think it got missed in the shuffle.

How to test

• Is this testable with Jest or Chromatic screenshots? I don't think so, I see some other refactors that can happen with enhanceSource and then things can be tested together.
• Does this need a new example in the kitchen sink apps? I believe the kitchen sink app will get these through it's transformSource config.
• Does this need an update to the documentation? Nope, the recipe actually makes it sound like this is globally called already.

If your answer is yes to any of these, please make sure to include it in your PR.

[shilman]

Looks great! Can you add an official-storybook example in Addons/Docs to demo this?

[phated]

Yep! I'll put one together now 😄

[phated]

All set! Here's a screenshot of what this looks like in the official-storybook!

[shilman]

the string values are not capitalized 😭

[phated]

Whoops, sorry about that. I've applied your suggestions!

[shilman]

🙌