修复：整理画布生成工作流导入顺序

按 simple-import-sort 要求调整完美像素与 BGM 助手导入顺序

通过目标文件 ESLint 与 git diff --check

src/components/image-editor/useImageCanvasGenerationWorkflow.ts

@@ -116,13 +116,13 @@ import {
   type UiAssetExtractionTool,
   updateUiAssetExtractionDraftMark,
 } from './ImageCanvasUiAssetExtractionModel';
-import { useImageCanvasBackgroundMusicPromptAssist } from './useImageCanvasBackgroundMusicPromptAssist';
 import {
   forgetPerfectPixelOperation,
   readPerfectPixelOperations,
   savePerfectPixelOperation,
 } from './perfectPixelOperationStore';
 import type { CanvasGenerationDialogDraft } from './useCanvasGenerationDialogs';
+import { useImageCanvasBackgroundMusicPromptAssist } from './useImageCanvasBackgroundMusicPromptAssist';
 import {
   applyQueuedEditorGenerationProject,
   createEditorGenerationMediaUploadId,