update runtime code

销毁Package的时候清空缓存记录。

Assets/YooAsset/Runtime/CacheSystem/CacheSystem.cs

@@ -23,6 +23,15 @@ namespace YooAsset
 			_cachedDic.Clear();
 		}
 
+		/// <summary>
+		/// 清空指定包裹的所有缓存数据
+		/// </summary>
+		public static void ClearPackage(string packageName)
+		{
+			var cache = GetOrCreateCache(packageName);
+			cache.ClearAll();
+		}
+
 		/// <summary>
 		/// 获取缓存文件总数
 		/// </summary>

Assets/YooAsset/Runtime/YooAssets.cs

@@ -150,6 +150,9 @@ namespace YooAsset
 			YooLogger.Log($"Destroy resource package : {packageName}");
 			_packages.Remove(package);
 			package.DestroyPackage();
+
+			// 清空缓存
+			CacheSystem.ClearPackage(packageName);
 		}
 
 		/// <summary>