Keep fused location streaming through GPS rejects

soc/software/gps_system/src/fusion/navigation_fusion.c

@@ -123,6 +123,8 @@ bool navigation_fusion_get_output(navigation_fusion_output_t* output)
 	}
 	const fusion_runtime_t* runtime = &fusion_engine.current;
 	output->timestamp_ticks = runtime->filter_timestamp_ticks;
+	output->last_accepted_gps_ticks =
+		runtime->last_accepted_position_ticks;
 	memcpy(output->position_enu_m, runtime->filter.position_m,
 	       sizeof(output->position_enu_m));
 	memcpy(output->velocity_enu_mps, runtime->filter.velocity_mps,