SDL_EVENT_WINDOW_LAST should be SDL_EVENT_WINDOW_HDR_STATE_CHANGED

Fixes https://github.com/libsdl-org/SDL/issues/10299

include/SDL3/SDL_events.h

@@ -153,7 +153,7 @@ typedef enum SDL_EventType
     SDL_EVENT_WINDOW_PEN_LEAVE,         /**< Window has lost focus of the pressure-sensitive pen with ID "data1" */
     SDL_EVENT_WINDOW_HDR_STATE_CHANGED, /**< Window HDR properties have changed */
     SDL_EVENT_WINDOW_FIRST = SDL_EVENT_WINDOW_SHOWN,
-    SDL_EVENT_WINDOW_LAST = SDL_EVENT_WINDOW_PEN_LEAVE,
+    SDL_EVENT_WINDOW_LAST = SDL_EVENT_WINDOW_HDR_STATE_CHANGED,
 
     /* Keyboard events */
     SDL_EVENT_KEY_DOWN        = 0x300, /**< Key pressed */