Merge branch 'net_sched-fix-a-regression-in-sch_htb'

Cong Wang says:

====================
net_sched: fix a regression in sch_htb

This patchset contains a fix for the regression reported by Alan and a
selftest to cover that case. Please see each patch description for more
details.
====================

Link: https://patch.msgid.link/20250428232955.1740419-1-xiyou.wangcong@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>