Handle zeros in initial/evovling conditions files

[K20shores]

The attached configuration fails to run in version 2.9.1 because it has a zero set for the value of 'PHOTO.EMIS_NO2_emis' in the initial conditions file. This causes the setting of the state rate constants to fail with this error:

:: music_box -c /Users/kshores/Downloads/config_U101/temp/config/my_config.json
Traceback (most recent call last):
  File "/opt/homebrew/anaconda3/envs/musicbox/bin/music_box", line 8, in <module>
    sys.exit(main())
  File "/Users/kshores/Documents/music-box/src/acom_music_box/main.py", line 132, in main
    result = myBox.solve(callback=None)
  File "/Users/kshores/Documents/music-box/src/acom_music_box/music_box.py", line 117, in solve
    self.state.set_user_defined_rate_parameters(curr_conditions.rate_parameters)
  File "/opt/homebrew/anaconda3/envs/musicbox/lib/python3.9/site-packages/musica/types.py", line 161, in set_user_defined_rate_parameters
    if len(value) != self.__number_of_grid_cells:
TypeError: object of type 'numpy.int64' has no len()

Acceptance criteria

• This configuration can run without failure

Ideas

• Ensure any conditions we read in explicitly are set as np.float64

config.zip

[github-actions]

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