Estimation doesn't work when input file doesn't have redshift column

[hdante]

Hello, in input files without the redshift column, executing the redshift estimation doesn't work:

Traceback (most recent call last):
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/slurm-home/bin/rail-estimate", line 260, in <module>
    main()
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/slurm-home/bin/rail-estimate", line 256, in main
    estimate(cfg, ctx)
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/slurm-home/bin/rail-estimate", line 248, in estimate
    ctx.estimator.estimate(ctx.input)
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/miniconda3/lib/python3.11/site-packages/rail/estimation/estimator.py", line 97, in estimate
    self.run()
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/miniconda3/lib/python3.11/site-packages/rail/estimation/estimator.py", line 110, in run
    self._process_chunk(s, e, test_data, first)
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/miniconda3/lib/python3.11/site-packages/rail/estimation/algos/lephare.py", line 199, in _process_chunk
    input = _rail_to_lephare_input(data, self.config.bands, self.config.err_bands)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/lustre/t1/cl/lsst/tmp/henrique.almeida/miniconda3/lib/python3.11/site-packages/rail/estimation/algos/lephare.py", line 246, in _rail_to_lephare_input
    ng = data["redshift"].shape[0]
         ~~~~^^^^^^^^^^^^
KeyError: 'redshift'

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• [x] I have described the situation in which the bug arose, including what code was executed, information about my environment, and any applicable data others will need to reproduce the problem.
• [x] I have included available evidence of the unexpected behavior (including error messages, screenshots, and/or plots) as well as a descriprion of what I expected instead.
• [x] If I have a solution in mind, I have provided an explanation and/or pseudocode and/or task list.

[raphaelshirley]

Hi, thanks for all the checks. This is easily fixed. I'll create a PR...