Start passing entity type/entity ID context to SdcController from the FE

Yes, please!

\Drupal\experience_builder\Controller\SdcController::layout() has this horribleness:

  public function layout(): JsonResponse {
    $first_article = Node::load(1);
    if (!$first_article || $first_article->getType() !== 'article') {
      throw new \LogicException('For now, this assumes node 1 exists and is an article!');
    }

    assert($first_article->field_xb_demo[0] instanceof ComponentTreeItem);

    $tree = $first_article->field_xb_demo[0]->get('tree');
    assert($tree instanceof ComponentTreeStructure);

    $hydrated = $first_article->field_xb_demo[0]->get('hydrated');
    assert($hydrated instanceof ComponentTreeHydrated);
    $hydrated_json = $hydrated->getValue()->getContent();

That's something that this should remove 🤓

(Thanks for creating this issue!)

I'm running into this too over at #3461422: Evolve component instance edit form to become simpler: generate a Field Widget directly.

Ensuring this shows up on https://contribkanban.com/board/experience_builder.

Are these commit messages auto-generated and random? 🤪🤣

The MR indicates that this depends on #3465107: Clarify if local dev on /ui should be possible without Drupal, reflecting that.

#3465107: Clarify if local dev on /ui should be possible without Drupal should land first, but that didn't stop me from reviewing 😊

The back-end changes here (in the controllers + *.routing.yml) make sense.

The front-end changes I'd like to be reviewed by either @bnjmnm or @jessebaker 😊

FE looks good

This caused a small regression, which #3462709: Introduce `hook_storable_prop_shape_alter()`, use it to prefer the Media Library widget for "image" PropShape if Media Library is installed surfaced. Fixed by removing one character in https://git.drupalcode.org/project/experience_builder/-/merge_requests/1...

This introduced a regression: #3466531: Regression caused by #3462247: `configure` route in *.info.yml missing mandatory parameters.