[UE] fix: compatible with bundlers. #1253
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Fixed #1252
大多数JS打包器为了ESM和CommonJS的兼容,引入了助手工具,在运行时判断"__esModule"的值,进而决定是否继续遍历获取模块的属性。"ue"和"cpp"模块中的loadType方法是延迟加载的思路,和这些助手函数有冲突,参考rollup/rollup#2954
引入"__esModule = true",可解决这个问题。在Windows下,UE5.0.3,打包工具为tsup的环境下,测试通过。不过,"__esModule"只是诸多打包器的惯用方式,并非语言官方规范中的属性。