Use the pure python ascii reader to parse results

The fast reader has more hidden bugs than the python one (the latest one is here: https://github.com/astropy/astropy/issues/9886), and we're not really limited by the parser performance in astroquery when the data needs to be downloaded from the internet to begin with.

Start by locating where astroquery uses the fast ASCII reader and compare those call sites with the pure Python reader. Review the linked Astropy issue for context; done means astroquery parses results with the pure Python reader instead of the fast reader.

Written by the indexing model from the issue text.