Issue #3352256: [META] Move code from the experimental SDC module to core

core/assets/schemas/v1/metadata-full.schema.json

 {
-  "$id": "https://git.drupalcode.org/project/sdc/-/raw/1.x/src/metadata.schema.json",
+  "$id": "https://git.drupalcode.org/project/drupal/-/raw/HEAD/core/assets/schemas/v1/metadata-full.schema.json",
   "$schema": "http://json-schema.org/draft-04/schema#",
   "$defs": {
     "slotDefinition": {