test_lamni_account_change_reset.py and test_lamni_tomo_angles.py set
builtins.__dict__["bec"] directly with no cleanup, so a leaked fake
account ("e22222") from an earlier test file was still in place when
test_x_ray_eye_align.py later constructed a real LamNI(), tripping
_maybe_reset_params_on_account_change()'s interactive yesno() prompt
and failing under pytest's captured stdin. Use monkeypatch.setitem so
pytest reverts the global after each test, matching the pattern already
used in test_lamni_tomo_alignment_scan.py.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>