Merge branch 'follow-ups-to-nk_qlease-net-selftests'

Daniel Borkmann says:

====================
Follow-ups to nk_qlease net selftests

This is a set of follow-ups addressing [0]:

- Split netdevsim tests from HW tests in nk_qlease and move the SW
  tests under selftests/net/
- Remove multiple ksft_run()s to fix the recently enforced hard-fail
- Move all the setup inside the test cases for the ones under
  selftests/net/ (I'll defer the HW ones to David)
- Add more test coverage related to queue leasing behavior and corner
  cases, so now we have 45 tests in nk_qlease.py with netdevsim
  which does not need special HW
====================

Link: https://patch.msgid.link/20260413220809.604592-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>