The library's pin and region popups (useMapEvents) interpolated data fields raw into the HTML handed to
setHTML(); a name like <img src=x onerror=…> from an API or a partner's list would run in the host page
(CRITIC-3). library/utils/html.js adds escapeHtml and safeUrl (http(s) only); every field of both popups
goes through them. check:popup-escaping (headless, gates:post) mounts the real composable, renders both
popups from hostile data and requires no markup, handler or javascript: URL to survive: it FAILs on the
previous code (both popups) and PASSes here. check:cdn-pins and check:no-eval join gates:post too.
