Fix NotificationBadge unsent color (#9522)

Author: Germain

src/components/views/rooms/NotificationBadge/StatelessNotificationBadge.tsx

@@ -51,7 +51,7 @@ export function StatelessNotificationBadge({
     const classes = classNames({
         'mx_NotificationBadge': true,
         'mx_NotificationBadge_visible': isEmptyBadge ? true : hasUnreadCount,
-        'mx_NotificationBadge_highlighted': color === NotificationColor.Red,
+        'mx_NotificationBadge_highlighted': color >= NotificationColor.Red,
         'mx_NotificationBadge_dot': isEmptyBadge,
         'mx_NotificationBadge_2char': symbol?.length > 0 && symbol?.length < 3,
         'mx_NotificationBadge_3char': symbol?.length > 2,

test/components/views/rooms/NotificationBadge/StatelessNotificationBadge-test.tsx

@@ -0,0 +1,38 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from "react";
+import { render } from "@testing-library/react";
+
+import {
+    StatelessNotificationBadge,
+} from "../../../../../src/components/views/rooms/NotificationBadge/StatelessNotificationBadge";
+import { NotificationColor } from "../../../../../src/stores/notifications/NotificationColor";
+
+describe("StatelessNotificationBadge", () => {
+    it("is highlighted when unsent", () => {
+        const { container } = render(
+            <StatelessNotificationBadge
+                symbol="!"
+                count={0}
+                color={NotificationColor.Unsent}
+            />,
+        );
+        expect(
+            container.querySelector(".mx_NotificationBadge_highlighted"),
+        ).not.toBe(null);
+    });
+});