Also log the non-HTTPS URL case in safeImageUrl

When I added this new error case in the last change, I made it log to Sentry, because I don't think this should be possible under our data set, so if it happens I want to hear about it. Same is true for this error case, so let's log it too!

src/app/util.js

@@ -138,9 +138,11 @@ export function safeImageUrl(urlString) {
   }
 
   if (url.protocol !== "https:") {
-    console.warn(
+    logAndCapture(
+      new Error(
         `safeImageUrl was provided an unsafe URL, but we don't know how to ` +
           `upgrade it to HTTPS: ${urlString}. Returning a placeholder.`
+      )
     );
     return "https://impress-openneo.net/__error__URL-was-not-HTTPS__";
   }