We should enrich the testPopUp.html to cover more cases of the popup window behavior like with the following tickets:
https://github.com/mozilla-mobile/firefox-ios/issues/25031
https://github.com/mozilla-mobile/firefox-ios/issues/17911#issuecomment-1868026639
testPopUp.html is in the SampleBrowser Project
:information_source: Reference Person
@FilippoZazzeroni
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