💥 Rename ExtUI settings methods

Marlin/src/lcd/extui/example/example.cpp

@@ -88,12 +88,12 @@ namespace ExtUI {
     // Called after loading or resetting stored settings
   }
 
-  void onConfigurationStoreWritten(bool success) {
+  void onSettingsStored(bool success) {
     // Called after the entire EEPROM has been written,
     // whether successful or not.
   }
 
-  void onConfigurationStoreRead(bool success) {
+  void onSettingsLoaded(bool success) {
     // Called after the entire EEPROM has been read,
     // whether successful or not.
   }