Wrong Realization of Function.length

[zhiyi01]

Wrong Realization of Function.length by ChakraCore

function func01(a, b) {
    return a + b
}
print(func01.length)
Object.defineProperty(func01, "length", {
    writable: true
})
func01.length = "0x1234"
print(func01.length)

the expected output: 2<--Number ,0x1234<--String
ChakraCore output : 2<--Number ,2<--Number
V8|JSC|SpiderMonkey output : 2<--Number ,0x1234<--String

[rhuanjl]

This was fixed in master in #5405 unfortunately the release branch does not yet include that.