Add support for Mouse Down and Up events firing even if the UIS processed parameter is true

[CaptinLetus]

At the moment, the mouse up and down events do not fire if the UserInputService processed parameter is true

UserInputService:Connect(function (input: InputObject, processed: boolean)
  if processed then return end
end)

My usecase, I am making a custom camera that players can rotate by holding down the right mouse button. If they release the mouse while hovering over a proximity prompt UI, the mouse up event does not fire since processed is true. For this mouse object, I want the events to fire even if processed is true

Perhaps we can add some configuration settings in the mouse constructor to set this as a setting