chore(editor): sort imports in glb-export.test.ts after main merge

Fixes the lone biome organizeImports error so the quality gate passes on the
post-#448 base. Type-check (9/9), biome, and all suites green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/editor/src/lib/glb-export.test.ts

@@ -1,7 +1,7 @@
 import { afterEach, describe, expect, test } from 'bun:test'
 import { type AnyNode, DoorNode, sceneRegistry } from '@pascal-app/core'
-import * as THREE from 'three'
 import { buildDoorPreviewMesh } from '@pascal-app/viewer'
+import * as THREE from 'three'
 import { prepareSceneForExport } from './glb-export'
 
 afterEach(() => {