add FLAG_ACTIVITY_NEW_TASK to MainActivity intent

see https://developer.android.com/about/versions/pie/android-9.0-changes-all#fant-required

Author: yshrsmz

app/src/main/java/net/yslibrary/monotweety/activity/main/MainActivity.kt

@@ -23,6 +23,7 @@ class MainActivity : BaseActivity(), ActionBarProvider, HasComponent<MainActivit
     companion object {
         fun callingIntent(context: Context): Intent {
             val intent = Intent(context, MainActivity::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
             return intent
         }
     }