Disable change temp with B/+ in soldering mode

Disabled the change temp menu appearing when + is pressed in soldering mode to prevent accidental changes of temperature while using boost mode.

source/Core/Threads/UI/logic/Soldering.cpp

@@ -65,6 +65,7 @@ OperatingMode handleSolderingButtons(const ButtonState buttons, guiContext *cxt)
     }
     break;
   case BUTTON_F_SHORT:
+    break;
   case BUTTON_B_SHORT:
     cxt->transitionMode = TransitionAnimation::Left;
     return OperatingMode::TemperatureAdjust;