♻️ Adjust LCD init, contrast default, settings load

Marlin/src/lcd/extui/ui_api.cpp

@@ -1144,7 +1144,7 @@ namespace ExtUI {
 
 // At the moment we hook into MarlinUI methods, but this could be cleaned up in the future
 
-void MarlinUI::init() { ExtUI::onStartup(); }
+void MarlinUI::init_lcd() { ExtUI::onStartup(); }
 
 void MarlinUI::update() { ExtUI::onIdle(); }