Provide a string to display the variant for debugging.
The variant to process
Also print the type of the variant (trailing, in square brackets)
Format for a print width this wide, with the value
xf.Str.VariantToPrintableText Null => NULL xf.Str.VariantToPrintableText 2.34 => 2.34 xf.Str.VariantToPrintableText "testing 123" => testing 123