Fix SDFGI being used in unshaded debug draw

Fixes #62758

servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp

@@ -1706,7 +1706,7 @@ void RenderForwardClustered::_render_scene(RenderDataRD *p_render_data, const Co
 		}
 
 		if (p_render_data->environment.is_valid()) {
-			if (environment_get_sdfgi_enabled(p_render_data->environment)) {
+			if (environment_get_sdfgi_enabled(p_render_data->environment) && get_debug_draw_mode() != RS::VIEWPORT_DEBUG_DRAW_UNSHADED) {
 				using_sdfgi = true;
 			}
 			if (environment_get_ssr_enabled(p_render_data->environment)) {