AWM fields with custom displayer end up as plain html code in a cell in the generated xls

To reproduce put some field with a displayer that put a bit of HTML to display the value like a user field.

Ideally the macro should access the real value behind the displayer but since it seems to be working with the JSON it's a bit too late. I guess the best if still working with JSON result would be to convert the HTML into something that make sense for Excel format (most of the time it's images and links so clearly things supported in Excel).