sdl2: add back x11 window code fix (#2691)

third-party/SDL/src/video/x11/SDL_x11window.c

@@ -999,6 +999,10 @@ X11_SetWindowSize(_THIS, SDL_Window * window)
         }
 
         if (SDL_TICKS_PASSED(SDL_GetTicks(), timeout)) {
+            /* Timeout occurred and window size didn't change
+             * wwindow manager likely denied the resize. */
+            window->w = orig_w;
+            window->h = orig_h;
             break;
         }
 

vendor.yaml

@@ -26,6 +26,8 @@ third-party/fmt:
   git: bce8d4ed087a0560492426f9f5be2713804daded
 third-party/SDL:
   git: https://github.com/libsdl-org/SDL/tree/release-2.26.5
+  modifications:
+    - "PR #2691"
 third-party/imgui:
   git: https://github.com/ocornut/imgui/tree/v1.89.2
 third-party/tree-sitter: