Merge branch 'team-fix-header_ops-type-confusion-and-add-selftest'

Jiayuan Chen says:

====================
team: fix header_ops type confusion and add selftest

Hi,

This patch series fixes a panic reported by syzkaller in the team/bond/gre
stacked non-Ethernet configuration:
https://syzkaller.appspot.com/bug?extid=3d8bc31c45e11450f24c

The first patch fixes the header_ops type confusion / parse recursion
context issue in team. The second patch adds a selftest to reproduce the
reported scenario and prevent regressions in the future.

v1: https://lore.kernel.org/netdev/20260314062306.212765-1-jiayuan.chen@linux.dev/
v2: https://lore.kernel.org/netdev/20260317124606.157035-1-jiayuan.chen@linux.dev/
====================

Link: https://patch.msgid.link/20260320072139.134249-1-jiayuan.chen@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>