GHSA-GX2M-MCC2-R4P3 wlc: print_html outputs API data without HTML escaping

Impact The HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. Patches https://github.com/WeblateOrg/wlc/pull/1327 Workarounds The only vulnerable code path is HTML output which is opt-in. Reference...