Fix debug mode being set too late

-Early error messages were always being skipped

Author: TheSniperFan

src/gpu/vulkan/SDL_gpu_vulkan.c

@@ -12256,6 +12256,9 @@ static bool VULKAN_PrepareDriver(SDL_VideoDevice *_this, SDL_PropertiesID props)
 
     renderer = (VulkanRenderer *)SDL_calloc(1, sizeof(*renderer));
     if (renderer) {
+        // This needs to be set early for log filtering
+        renderer->debugMode = SDL_GetBooleanProperty(props, SDL_PROP_GPU_DEVICE_CREATE_DEBUGMODE_BOOLEAN, false);
+
         // Opt out device features (higher compatibility in exchange for reduced functionality)
         renderer->desiredVulkan10DeviceFeatures.samplerAnisotropy = SDL_GetBooleanProperty(props, SDL_PROP_GPU_DEVICE_CREATE_FEATURE_ANISOTROPY_BOOLEAN, true) ? VK_TRUE : VK_FALSE;
         renderer->desiredVulkan10DeviceFeatures.depthClamp = SDL_GetBooleanProperty(props, SDL_PROP_GPU_DEVICE_CREATE_FEATURE_DEPTH_CLAMPING_BOOLEAN, true) ? VK_TRUE : VK_FALSE;