rr.serve_web() deadlocks when logging before calling it

[jleibs]

Simple repro:

import rerun as rr

rr.init("stuck")

rr.log("entity", rr.Points3D([[0, 0, 0], [1, 1, 1]], radii=[0.5, 0.5, 0.5]))

rr.serve()

print("Exiting") # Never output

By comparison:

import rerun as rr

rr.init("stuck")

rr.serve()

rr.log("entity", rr.Points3D([[0, 0, 0], [1, 1, 1]], radii=[0.5, 0.5, 0.5]))

print("Exiting")

exits as expected.

[jleibs]

This appears to have been an issue since 0.17.