nexus writers tests fail

=================================== FAILURES ===================================
____________________________ test_nxw_loopscan_base ____________________________
E       not expected: ['diode2alias', 'diode9alias', 'lima_simulator', 'lima_simulator2']
E       not present: ['diode2', 'diode9', 'lima_simulator2_image', 'lima_simulator_image']

tests/nexus_writer/helpers/nxw_test_data.py:652: AssertionError
============================== 1 failed in 22.58s ==============================

The base writer was not expected to be aware of aliases but it is. Not sure how I didn't catch this before. I'll fix it.