Projectkk2glider/misc fixes (#4331)

* Re #4326: default backlight mode keys+sticks

* Re #4329: when saving radio/model data work on a copy of it, because Export() can change values. Fixes switch warnings change for Horus

companion/src/eeprominterface.cpp

@@ -1075,6 +1075,9 @@ GeneralSettings::GeneralSettings()
     switchConfig[i] = getSwitchInfo(board, i).config;
   }
 
+  backlightMode = 3; // keys and sticks
+  // backlightBright = 0; // 0 = 100%
+
   if (IS_HORUS(board)) {
     backlightOffBright = 20;
   }