Joystick input: Ignore in-deadzone events from a different device than previous events

Fixes #15465

UI/ControlMappingScreen.cpp

@@ -583,6 +583,7 @@ void JoystickHistoryView::Update() {
 
 AnalogSetupScreen::AnalogSetupScreen() {
 	mapper_.SetCallbacks([](int vkey) {}, [](int vkey) {}, [&](int stick, float x, float y) {
+		NOTICE_LOG(COMMON, "analog value from mapper: %f %f", x, y);
 		analogX_[stick] = x;
 		analogY_[stick] = y;
 	});