Test closing hidden target
Create hidden target
Filtered targets via browser session: [
    [0] : {
        targetId : <string 0>
        url : about:blank?HIDDEN=TARGET
    }
]
Close hidden target
DetachedFromTarget {
    method : Target.detachedFromTarget
    params : {
        sessionId : <string 1>
        targetId : <string 0>
    }
}
Filtered targets via browser session: [
]