Timeless entities are filtered out by visible time range in some cases

[abey79]

Let's consider this example (one timeless box and a moving point:

import rerun as rr

rr.init("rerun_example_timeless_vh")
rr.connect()

for i in range(10):
    rr.set_time_seconds("time", i)
    rr.log("points", rr.Points3D([[i/10, i/10, i/10]]))

rr.log("box", rr.Boxes3D(centers=[0, 0, 0], half_sizes=[1, 1, 1]), timeless=True)

With a starting bound of "beginning of timelines" for VH, the box is visible:

With a starting bound of "current - Xs", the box is not visible...

...unless X=0: