This tests that assigning to document.location from a timeout in a button click adds a back/forward item. Navigate

============== Back Forward List ==============
        http://127.0.0.1:8000/navigation/document-location-click-timeout.html  **nav target**
curr->  http://127.0.0.1:8000/navigation/document-location-click-timeout.html?1  **nav target**
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