No, sorry, there is explicit signage for cycle traffic to be routed around the park via the bicycle road. In addition, the park is designated as a green space, which in Berlin (unfortunately) implies a de jure ban on cycling unless otherwise signposted. The fact that many cyclists nevertheless pass through here does not mean that we map it that way in OSM, because above all the path is not very suitable for cycling: It is quite narrow and sometimes heavily frequented by pedestrians.