Enhance stealth about `Object.prototype.hasOwnProperty.call` of `XMLHttpRequest` related scriptlets

[piquark6046]

const Req = new XMLHttpRequest()
Req.open('OPTIONS', 'https://example.com')
Req.send()

const CleanReq = new XMLHttpRequest()

const Properties = ['status', 'statusText', 'readyState', 'response', 'responseURL', 'responseXML', 'setRequestHeader'] as const
Properties.forEach(Key => {
    // 'call' indicates Function.prototype.call
  console.log(`Object.prototype.hasOwnProperty.call(Req, ${Key})`, Object.prototype.hasOwnProperty.call(Req, Key))
  console.log(`Compares XMLHttpReqeust.prototype with clean one ${Key}`, Req[Key] === CleanReq[Key])
})

const Properties = ['status', 'statusText', 'readyState', 'response', 'responseURL', 'responseXML', 'setRequestHeader'] as const

const Req = new XMLHttpRequest()
Req.timeout = 1000
Req.onerror = () => { Func() }
Req.onabort = () => {}
Req.onload = () => { Func() }
Req.ontimeout = () => {}
Req.open('OPTIONS', 'https://example.com/', true)
Req.send()

const CleanReq = new XMLHttpRequest()

function Func() {
  Properties.forEach(Key => {
    // 'call' indicates Function.prototype.call
    console.log(`Object.prototype.hasOwnProperty.call(Req, ${Key})`, Object.prototype.hasOwnProperty.call(Req, Key))
    console.log(`Compares XMLHttpReqeust.prototype with clean one ${Key}`, Req[Key] === CleanReq[Key])
  })
}

Compares execution result in DevTool of the above Typescript code snippet with and without example.com#%#//scriptlet('prevent-xhr', 'example.com method:OPTIONS').

Related to uBlockOrigin/uAssets#34177