SDL: x11: Fix the Openbox quirk flag (18700)

SDL Commits
1 
From 1870052af6a4b1a88902cd791576a4cc72d90611 Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Sat, 10 May 2025 15:39:03 -0400
Subject: [PATCH] x11: Fix the Openbox quirk flag

Openbox needs fullscreen size/position event synthesized, but does not send display changed events.

(cherry picked from commit 84308e7fba9b59338109f0c0ad49bc7c5107ac06)
---
 src/video/x11/SDL_x11video.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/x11/SDL_x11video.c b/src/video/x11/SDL_x11video.c
index 75862db2215ff..c188f91f43273 100644
--- a/src/video/x11/SDL_x11video.c
+++ b/src/video/x11/SDL_x11video.c
@@ -279,7 +279,7 @@ static SDL_VideoDevice *X11_CreateDevice(void)
      * This is otherwise not wanted, as it can break fullscreen window positioning on multi-monitor configurations.
      */
     if (!X11_CheckCurrentDesktop("openbox")) {
-        device->device_caps |= VIDEO_DEVICE_CAPS_SENDS_DISPLAY_CHANGES;
+        device->device_caps |= VIDEO_DEVICE_CAPS_SENDS_FULLSCREEN_DIMENSIONS;
     }
 
     data->is_xwayland = X11_IsXWayland(x11_display);