Merge branch 'selftests-drv-net-replace-the-rpath-helper-with-path-objects'

Jakub Kicinski says:

====================
selftests: drv-net: replace the rpath helper with Path objects

Trying to change the env.rpath() helper during the development
cycle was causing a lot of conflicts between net and net-next.
Let's get it converted now that the trees are converged.

v2: https://lore.kernel.org/20250306171158.1836674-1-kuba@kernel.org
====================

Link: https://patch.msgid.link/20250327222315.1098596-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>