[fenix] For https://github.com/mozilla-mobile/fenix/issues/14629 - Enable showing frequently visited sites ON by default (https://github.com/mozilla-mobile/fenix/pull/14630)

app/src/main/java/org/mozilla/fenix/FeatureFlags.kt

@@ -29,7 +29,7 @@ object FeatureFlags {
     /**
      * Enables showing the top frequently visited sites
      */
-    val topFrecentSite = Config.channel.isNightlyOrDebug
+    const val topFrecentSite = true
 
     /**
      * Enables wait til first contentful paint

app/src/main/java/org/mozilla/fenix/utils/Settings.kt

@@ -102,7 +102,7 @@ class Settings(private val appContext: Context) : PreferencesHolder {
 
     var showTopFrecentSites by featureFlagPreference(
         appContext.getPreferenceKey(R.string.pref_key_enable_top_frecent_sites),
-        default = false,
+        default = true,
         featureFlag = FeatureFlags.topFrecentSite
     )