I think once you have ridden you can always ride.
Yes, I can ride a push bike and did so for many years, even after falling and injuring myself going down a large hill when younger.
However I have not ridden a bike for many years - perhaps about 25 years - I cannot remember when I last rode a push bike but feel sure even though I would be rusty, i would still be able to.
However, I have no need to, so will not be trying, and no longer own a bike anyway!