[fenix] For https://github.com/mozilla-mobile/fenix/issues/19804: checkDefaultBrowser moved to helper function

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

@@ -311,16 +311,7 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
             }
         }
 
-        // Launch this on a background thread so as not to affect startup performance
-        lifecycleScope.launch(IO) {
-            if (
-                settings().checkDefaultBrowserAndSet()
-            ) {
-                metrics.track(Event.ChangedToDefaultBrowser)
-            }
-
-            DefaultBrowserNotificationWorker.setDefaultBrowserNotificationIfNeeded(applicationContext)
-        }
+        trackDefaultBrowser()
     }
 
     override fun onStart() = PerfStartup.homeActivityOnStart.measureNoInline {
@@ -955,6 +946,19 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
         }
     }
 
+    private fun trackDefaultBrowser(){
+        // Launch this on a background thread so as not to affect startup performance
+        lifecycleScope.launch(IO) {
+            if (
+                settings().checkDefaultBrowserAndSet()
+            ) {
+                metrics.track(Event.ChangedToDefaultBrowser)
+            }
+
+            DefaultBrowserNotificationWorker.setDefaultBrowserNotificationIfNeeded(applicationContext)
+        }
+    }
+
     @VisibleForTesting
     internal fun isActivityColdStarted(startingIntent: Intent, activityIcicle: Bundle?): Boolean {
         // First time opening this activity in the task.