Alma.query_object() parameter public=False may not behave as in documentation

`obs = Alma.query_object('M83', public=False) `
`obs['data_rights']`

The above code will return all of the Proprietary data, while indicating public=True returns all Public data.

This is different than the [documentation](https://astroquery.readthedocs.io/en/latest/alma/alma.html), as in:

For example, if you want to find all projects with a particular PI, you could do:
`rslt = Alma.query_object('W51', pi_name='*Ginsburg*', public=False)
`

Start with the Alma.query_object entry point and compare the M83 reproduction with the public=False example in the linked Alma documentation. Check how public=True and public=False affect the returned data_rights values; done when the implementation and documentation agree, with the behavior covered by an appropriate regression check.

Written by the indexing model from the issue text.