refactor: 优化图片预览插件中节点子类型的类型定义

src/lib/editor/imagePreviewPlugin.ts

@@ -35,7 +35,6 @@ class ImagePreviewWidget extends WidgetType {
 	}
 }
 
-
 function getImageDecorationsForState(state: EditorState) {
 	const widgets: Range<Decoration>[] = [];
 
@@ -44,7 +43,7 @@ function getImageDecorationsForState(state: EditorState) {
 			name: string;
 			from: number;
 			to: number;
-			node: { getChild: (type: string) => any };
+			node: { getChild: (type: string) => { from: number; to: number } | null };
 		}) => {
 			if (node.name === 'Image') {
 				// 查找图片语法中的 URL 节点