[unreal]静态绑定IsInstanceOf得先判断是不是Object，fix https://github.com/Tencent/… #487

Job	Run time
urls	1s
Android (https://github.com/puerts/backend-v8/releases/download/V8_9.4.146.24__241009/v8_bin_9.4....	9m 5s
Mac and IOS (https://github.com/puerts/backend-v8/releases/download/V8_9.4.146.24__241009/v8_bin_...	11m 6s
Android (https://github.com/puerts/backend-quickjs/releases/download/QJS_241030/qjs_v8_bin.tgz, s...	10m 55s
Windows (https://github.com/puerts/backend-v8/releases/download/V8_9.4.146.24__241009/v8_bin_9.4....	5m 56s
Mac and IOS (https://github.com/puerts/backend-quickjs/releases/download/QJS_241030/qjs_v8_bin.tg...	10m 37s
Android (https://github.com/puerts/backend-nodejs/releases/download/NodeJS_16.16.0_221228/nodejs_...	9m 39s
Windows (https://github.com/puerts/backend-quickjs/releases/download/QJS_241030/qjs_v8_bin.tgz, s...	5m 26s
Mac and IOS (https://github.com/puerts/backend-nodejs/releases/download/NodeJS_16.16.0_221228/nod...	9m 45s
Windows (https://github.com/puerts/backend-nodejs/releases/download/NodeJS_16.16.0_221228/nodejs_...	5m 44s
	1h 18m 14s

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