Merge branch 'net-shaper-fix-valid-confusion-even-more'

Jakub Kicinski says:

====================
net: shaper: fix VALID confusion even more

Sashiko reported another pre-exising issue in the previous
batch of fixes:
https://sashiko.dev/#/patchset/20260510192904.3987113-7-kuba@kernel.org

Turns out I over-esitmated the guarantees of the XArray flags.
Stop using them completely.
====================

Link: https://patch.msgid.link/20260515221325.1685455-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>