Port proto_nd_flow yaml changes to ndlar_flow yamls

[alexbooth92]

When running the nominal ndlar_flow workflow for NDLAr in develop, Eva Sabater came across the following crash:

~~~ RUN ~~~
Run loop on light/events:
  timestamp_corrector -> wvfm_filt -> wvfm_align -> wvfm_calib -> wvfm_sum -> sipm_hit_finder -> sum_hit_finder -> flash_finder
  0%|          | 0/4 [00:03<?, ?it/s]
Traceback (most recent call last):
  File "/pscratch/sd/d/dunepro/esabater/install/ND_Production/run-ndlar-flow/flow.venv/bin/h5flow", line 6, in <module>
    sys.exit(main())
             ^^^^^^
  File "/pscratch/sd/d/dunepro/esabater/install/ND_Production/run-ndlar-flow/h5flow/h5flow/__init__.py", line 155, in main
    run(**vars(args))
  File "/pscratch/sd/d/dunepro/esabater/install/ND_Production/run-ndlar-flow/h5flow/h5flow/__init__.py", line 118, in run
    manager.run()
  File "/pscratch/sd/d/dunepro/esabater/install/ND_Production/run-ndlar-flow/h5flow/h5flow/core/h5_flow_manager.py", line 241, in run
    stage.run(self.generator.dset_name, chunk, cache)
  File "/pscratch/sd/d/dunepro/esabater/install/ND_Production/run-ndlar-flow/ndlar_flow/src/proto_nd_flow/reco/light/wvfm_calib.py", line 128, in run
    rms_data = cache[self.rms_dset_name].reshape(event_data.shape)
               ~~~~~^^^^^^^^^^^^^^^^^^^^
KeyError: 'light/events/rms'

This PR implements @mjkramer's suggestion for a fix.