update kotlinx-coroutines to 1.6.4

V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt

@@ -631,7 +631,9 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
         if (binding.drawerLayout.isDrawerOpen(GravityCompat.START)) {
             binding.drawerLayout.closeDrawer(GravityCompat.START)
         } else {
-            super.onBackPressed()
+            //super.onBackPressed()
+            onBackPressedDispatcher.onBackPressed()
+
         }
     }