Spoof the Tor Browser time displayed to websites if clocks are wrong

Javascript can be used to get the system time of a user. This allows for fingerprinting via different clock offsets and skews. This also may allow websites to determine the user's location by seeing which country has the same time as the user.

Currently, the Tor Browser spoofs the timezone displayed to websites to UTC but this doesn't spoof the actual system time which can still be gotten with new Date().

The Tor Browser should spoof the time shown to websites so all Tor Browser users have the same time or a random time.