Fix SetMousePosition() for SDL (#3580)

src/platforms/rcore_desktop_sdl.c

@@ -941,6 +941,8 @@ int SetGamepadMappings(const char *mappings)
 // Set mouse position XY
 void SetMousePosition(int x, int y)
 {
+    SDL_WarpMouseInWindow(platform.window, x, y);
+
     CORE.Input.Mouse.currentPosition = (Vector2){ (float)x, (float)y };
     CORE.Input.Mouse.previousPosition = CORE.Input.Mouse.currentPosition;
 }