SWE L1b failure

[greglucas]

In the latest SWE l1b job, there is an unbound local error during processing.

Processing SWE l1b
Traceback (most recent call last):
  File "/usr/local/bin/imap_cli", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/local/lib/python3.12/site-packages/imap_processing/cli.py", line 1523, in main
    instrument.process()
  File "/usr/local/lib/python3.12/site-packages/imap_processing/cli.py", line 444, in process
    products = self.do_processing(dependencies)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/imap_processing/cli.py", line 1378, in do_processing
    datasets = swe_l1b(dependencies)
               ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/imap_processing/swe/l1b/swe_l1b.py", line 954, in swe_l1b
    science_dataset = swe_l1b_science(dependencies)
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/imap_processing/swe/l1b/swe_l1b.py", line 739, in swe_l1b_science
    full_cycle_l1a_data, checkerboard_pattern
    ^^^^^^^^^^^^^^^^^^^
UnboundLocalError: cannot access local variable 'full_cycle_l1a_data' where it is not associated with a value