Bug 1882967: Create icon image by its blob and mimetype r=adw

Differential Revision: https://phabricator.services.mozilla.com/D203237

Author: Daisuke Akatsuka

browser/components/urlbar/private/SuggestBackendRust.sys.mjs

@@ -136,11 +136,12 @@ export class SuggestBackendRust extends BaseFeature {
       suggestion.provider = type;
       suggestion.is_sponsored = type == "Amp" || type == "Yelp";
       if (Array.isArray(suggestion.icon)) {
-        suggestion.icon_blob = new Blob(
-          [new Uint8Array(suggestion.icon)],
-          type == "Yelp" ? { type: "image/svg+xml" } : null
-        );
+        suggestion.icon_blob = new Blob([new Uint8Array(suggestion.icon)], {
+          type: suggestion.iconMimetype ?? "",
+        });
+
         delete suggestion.icon;
+        delete suggestion.iconMimetype;
       }
     }