Wayland: Ensure that glfw window content scale and kitty window content scale are in sync after the window is placed on a monitor

glfw/wl_platform.h

@@ -156,6 +156,7 @@ typedef struct _GLFWwindowWayland
     // We need to track the monitors the window spans on to calculate the
     // optimal scaling factor.
     int                         scale;
+    bool                        initial_scale_notified;
     _GLFWmonitor**              monitors;
     int                         monitorsCount;
     int                         monitorsSize;