[fenix] Closes https://github.com/mozilla-mobile/fenix/issues/19846: Update default browser notification strings

app/src/main/java/org/mozilla/fenix/onboarding/DefaultBrowserNotificationWorker.kt

@@ -58,6 +58,8 @@ class DefaultBrowserNotificationWorker(
             return NotificationCompat.Builder(this, channelId)
                 .setSmallIcon(R.drawable.ic_status_logo)
                 .setContentTitle(
+                    applicationContext.getString(R.string.notification_default_browser_title, appName))
+                .setContentText(
                     applicationContext.getString(R.string.notification_default_browser_text, appName))
                 .setBadgeIconType(NotificationCompat.BADGE_ICON_SMALL)
                 .setColor(ContextCompat.getColor(this, R.color.primary_text_light_theme))

app/src/main/res/values/strings.xml

@@ -1024,7 +1024,11 @@
     <string name="notification_powered_by_channel_name">Powered By</string>
     <!-- Name of the marketing notification channel. Displayed in the "App notifications" system settings for the app -->
     <string name="notification_marketing_channel_name">Marketing</string>
-    <!-- Text shown in the notification that pops up to remind the user to set fenix as default browser. -->
+    <!-- Title shown in the notification that pops up to remind the user to set fenix as default browser.
+    %1$s is a placeholder that will be replaced by the app name (Fenix). -->
+    <string name="notification_default_browser_title">%1$s is fast and private</string>
+    <!-- Text shown in the notification that pops up to remind the user to set fenix as default browser.
+    %1$s is a placeholder that will be replaced by the app name (Fenix). -->
     <string name="notification_default_browser_text">Make %1$s your default browser</string>
 
     <!-- Snackbar -->