Merge branch 'selftests-net-fix-cmd-process-timeout-handling'

Gal Pressman says:

====================
selftests: net: fix cmd.process() timeout handling

Pass the timeout argument correctly in cmd.process().
As Jakub noted, fixing the timeout broke the bpftrace() command
in netpoll_basic.py, so fix it first.
====================

Link: https://patch.msgid.link/20260310115803.2521050-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>