Bug 1856397 - Set "error" type to the incompatible message bar in `about:addons`. r=rpl

Differential Revision: https://phabricator.services.mozilla.com/D189834

toolkit/mozapps/extensions/content/aboutaddons.js

@@ -283,7 +283,7 @@ async function getAddonMessageInfo(addon) {
     return {
       messageId: "details-notification-incompatible2",
       messageArgs: { name, version: Services.appinfo.version },
-      type: "warning",
+      type: "error",
     };
   } else if (!isCorrectlySigned(addon)) {
     return {

toolkit/mozapps/extensions/test/browser/browser_html_warning_messages.js

@@ -204,7 +204,7 @@ add_task(async function testIncompatible() {
       id: "details-notification-incompatible",
       args: { name, version: appVersion },
     },
-    type: "warning",
+    type: "error",
   });
 });