Bad encoding for resources uploaded into DataStore

### Version

CKAN 2.9.5; XLoader 0.11.0

### Describe the bug
Uploading a resource with accented characters are stored and are shown in the previews with bad encoding.

### Expected behavior
Uploading a resource with accented characters are stored and shown with the correct encoding.

### Additional details

Looks like somehow if the first rows of the file are accented the resource is being uploaded OK.

See the column 'Vwx' of the Attached two files after being xloaded to the datastore:

Good.csv : This is uploaded and show correctly.
Bad.csv: This is uploaded and shown incorrectly.

MessyTables behavior is set to False
> ckanext.xloader.just_load_with_messytables = False

[Good.csv](https://github.com/ckan/ckanext-xloader/files/9675182/Good.csv)
[Bad.csv](https://github.com/ckan/ckanext-xloader/files/9675183/Bad.csv)

Start by reproducing the upload with Good.csv and Bad.csv while ckanext.xloader.just_load_with_messytables is False, then compare where their accented values diverge during XLoader processing or DataStore insertion. Done means accented characters from both files are stored and displayed correctly in the resource preview.

Written by the indexing model from the issue text.