fix: format import in ReferencedAssets.ts to satisfy Prettier

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mfazekas

src/core/ReferencedAssets.ts

@@ -1,4 +1,7 @@
-import type { ResolvedReferencedAsset, RiveAssetType } from '../specs/RiveFile.nitro';
+import type {
+  ResolvedReferencedAsset,
+  RiveAssetType,
+} from '../specs/RiveFile.nitro';
 import type { RiveImage } from '../specs/RiveImage.nitro';
 
 export type ReferencedAssetSource = {