Prevents an ongoing navigation from being unnecessarily canceled by a new, identical navigation that is initiated in quick succession. This optimization improves performance and the user experience by not wasting resources on a duplicate request, which can be caused by accidental double-clicks.
We observe users sometimes navigate to the same URL in quick succession, likely by accident. Because new navigations take precedent over an older one, this means it will waste the earlier navigation that's already in progress, potentially wasting a response that is already in flight for the navigation and causing the user to wait longer (from the time the first navigation kicks off). To mitigate this waste, the feature will ignore the duplicate navigation and let the first navigation continue.