fixup! feat!: Package and Entity keys are now opaque refs

fix: key->package_ref in restore data return

Author: kdmccormick

src/openedx_content/applets/backup_restore/zipper.py

@@ -417,7 +417,7 @@ class RestoreLearningPackageData:
     Data about the restored learning package.
     """
     id: int  # The ID of the restored learning package
-    key: str  # The package_ref of the restored learning package (may be different if staged)
+    package_ref: str  # The package_ref of the restored learning package (may be different if staged)
     archive_package_ref: str  # The original package_ref from the archive
     archive_org_code: str | None  # The org code parsed from archive_package_ref, or None if unparseable
     archive_package_code: str | None  # The package code parsed from archive_package_ref, or None if unparseable
@@ -601,7 +601,7 @@ def load(self) -> dict[str, Any]:
             log_file_error=None,
             lp_restored_data=RestoreLearningPackageData(
                 id=learning_package.id,
-                key=learning_package.package_ref,
+                package_ref=learning_package.package_ref,
                 archive_package_ref=archive_package_ref,
                 archive_org_code=org_code,
                 archive_package_code=package_code,