Wrong behaviour for window.fetch request called without parameters

[miherlosev]

Found in http://bxt-to-wc-weu-tst.azurewebsites.net/ site.

Without proxing:

var result = window.fetch();
result:
[[PromiseStatus]]:"rejected"
[[PromiseValue]]:TypeError: Failed to execute 'fetch' on 'Window': 1 argument required, but only 0 present. at eval (eval at evaluate (:117:21), <anonymous>:1:13) at http://localhost:3000/:16:5

With proxing:

var result = window.fetch();
result:
[[PromiseStatus]]:"pending"
[[PromiseValue]]:undefined

[miherlosev]

I'm working on this

[lock]

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