Turn off module on model change (#8189)

radio/src/gui/480x272/model_select.cpp

@@ -246,6 +246,7 @@ void onModelSelectMenu(const char * result)
       if (!confirmModelChange())
         return;
     }
+
     // we store the latest changes if any
     storageFlushCurrentModel();
     storageCheck(true);

radio/src/storage/storage_common.cpp

@@ -52,6 +52,9 @@ void preModelLoad()
     pausePulses();
   }
   pauseMixerCalculations();
+#if defined(EXTMODULE_PWR_GPIO)
+  EXTERNAL_MODULE_PWR_OFF();
+#endif
 
   stopTrainer();
 }