inchi datatype preview is wrong as it displays as tabular but inchi contains , so it shows multiple columns even if the format is correct

**Describe the bug**
The inchi is a single column tabular or text format that contains only inchi values to describe molecules. The preview treats it apparently as a csv, so if there is a ',' character, which is normal in inchi's, it treats it as a new column.

**Expected behavior**
inchi files should always just be displayed as a single column.

**Screenshots**

**Additional context**
Add any other context about the problem here.

Start by reproducing the preview with an InChI value containing a comma, then trace the preview handling for InChI and tabular formats. Done means an InChI file is consistently rendered as one column rather than being split into multiple columns.

Written by the indexing model from the issue text.