fix spine opacity failure.

cocos/2d/components/ui-opacity.ts

@@ -23,7 +23,7 @@
 */
 
 import { ccclass, disallowMultiple, editable, executeInEditMode, executionOrder, help, menu, serializable, tooltip } from 'cc.decorator';
-import { JSB } from 'internal:constants';
+import { EDITOR_NOT_IN_PREVIEW, JSB } from 'internal:constants';
 import { Component } from '../../scene-graph/component';
 import { misc } from '../../core';
 import { UIRenderer } from '../framework/ui-renderer';
@@ -67,6 +67,13 @@
         this.node._uiProps.localOpacity = value / 255;
 
         this.setEntityLocalOpacityDirtyRecursively(true);
+
+        if(EDITOR_NOT_IN_PREVIEW) {
+            setTimeout(()=>{
+                EditorExtends.Node.emit('change', this.node.uuid, this.node);
+            }, 200);
+        }
+
     }
 
     private setEntityLocalOpacityDirtyRecursively (dirty: boolean) {

cocos/spine/assembler/simple.ts

@@ -130,6 +130,7 @@ export const simple: IAssembler = {
 function updateComponentRenderData (comp: Skeleton, batcher: Batcher2D) {
     comp.drawList.reset();
     if (comp.color.a === 0) return;
+    comp._updateColor();
     _premultipliedAlpha = comp.premultipliedAlpha;
     _useTint = comp.useTint || comp.isAnimationCached();
     if (comp.isAnimationCached()) {

cocos/spine/skeleton.ts

@@ -1490,12 +1490,16 @@ export class Skeleton extends UIRenderer {
         }
     }
 
-    protected _updateColor () {
+    /**
+     * @engineInternal
+     */
+    public _updateColor (): void {
+        //if(EDITOR_NOT_IN_PREVIEW) cce.Node.emit('change-node', this.node);
         this.node._uiProps.colorDirty = true;
         const r = this._color.r / 255.0;
         const g = this._color.g / 255.0;
         const b = this._color.b / 255.0;
-        const a = this._color.a / 255.0;
+        const a = this.node._uiProps.opacity;
         this._instance.setColor(r, g, b, a);
     }