Merge branch 'nexthop-fix-two-nexthop-group-statistics-issues'

Ido Schimmel says:

====================
nexthop: Fix two nexthop group statistics issues

Fix two issues that were introduced as part of the recent nexthop group
statistics submission. See the commit messages for more details.
====================

Link: https://lore.kernel.org/r/20240311162307.545385-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>