[FIX] pass zephyr MTU config to UClient

Signed-off-by: Jiangeng Dong <dongjiangeng@gmail.com>
(cherry picked from commit 54976fe)

Author: JiangengDong

modules/libmicroros/libmicroros.mk

@@ -39,6 +39,7 @@ configure_colcon_meta: $(COMPONENT_PATH)/colcon.meta $(COMPONENT_PATH)/micro_ros
 	update_meta_from_zephyr_config "CONFIG_MICROROS_SERVERS" "rmw_microxrcedds" "RMW_UXRCE_MAX_SERVICES"; \
 	update_meta_from_zephyr_config "CONFIG_MICROROS_RMW_HISTORIC" "rmw_microxrcedds" "RMW_UXRCE_MAX_HISTORY"; \
 	update_meta_from_zephyr_config "CONFIG_MICROROS_XRCE_DDS_HISTORIC" "rmw_microxrcedds" "RMW_UXRCE_STREAM_HISTORY"; \
+	update_meta_from_zephyr_config "CONFIG_MICROROS_XRCE_DDS_MTU" "microxrcedds_client" "UCLIENT_CUSTOM_TRANSPORT_MTU"; \
 	update_meta "microxrcedds_client" "UCLIENT_PROFILE_SERIAL=OFF"; \
 	update_meta "microxrcedds_client" "UCLIENT_PROFILE_UDP=OFF"; \
 	update_meta "microxrcedds_client" "UCLIENT_PROFILE_TCP=OFF"; \