refactor(ecs): 将EcsSystemBase中的EcsWorld类型改为接口

- 将EcsWorld属性的类型从具体类EcsWorld改为接口IEcsWorld
- 修改OnInit方法中的服务获取逻辑以使用接口类型
- 提高代码的抽象性和可扩展性

GFramework.Core/ecs/EcsSystemBase.cs

@@ -13,7 +13,7 @@ public abstract class EcsSystemBase : AbstractSystem, IEcsSystem
     /// <summary>
     ///     ECS世界实例
     /// </summary>
-    protected EcsWorld EcsWorld { get; private set; } = null!;
+    protected IEcsWorld EcsWorld { get; private set; } = null!;
 
     /// <summary>
     ///     快捷访问内部World
@@ -35,7 +35,7 @@ public abstract class EcsSystemBase : AbstractSystem, IEcsSystem
     /// </summary>
     protected override void OnInit()
     {
-        EcsWorld = this.GetService<EcsWorld>() ?? throw new InvalidOperationException(
+        EcsWorld = this.GetService<IEcsWorld>() ?? throw new InvalidOperationException(
             "EcsWorld not found in context. Make sure ECS is properly initialized.");
 
         OnEcsInit();