Pay attention to Interop CSV header

[gsnedders]

Currently we just entirely skip the CSV header:

wpt.fyi/webapp/components/interop-2022.js

Line 1201 in 8bf23a6

csvLines.shift(); // We don't need the CSV header.

It would be potentially useful to amend the script to also generate results for Edge, however clearly if we start adding further columns to the CSV data file then we may well lead to unexpected changes in the rendering.