Clang warnings with pal_statistics macros

[christophfroehlich]

@saikishor this might be an upstream issue?

https://github.com/ros-controls/ros2_control/actions/runs/14684315684/job/41212136334?pr=2205

   /home/runner/work/ros2_control/ros2_control/.work/target_ws/src/ros2_control/hardware_interface/include/hardware_interface/handle.hpp:466:7: warning: must specify at least one argument for '...' parameter of variadic macro [-Wgnu-zero-variadic-macro-arguments]
    466 |       DEFAULT_UNREGISTER_ROS2_CONTROL_INTROSPECTION("command_interface." + get_name());
        |       ^
  /home/runner/work/ros2_control/ros2_control/.work/target_ws/src/ros2_control/hardware_interface/include/hardware_interface/introspection.hpp:51:3: note: expanded from macro 'DEFAULT_UNREGISTER_ROS2_CONTROL_INTROSPECTION'
     51 |   UNREGISTER_ENTITY(DEFAULT_REGISTRY_KEY, ID);
        |   ^
  /opt/ros/rolling/include/pal_statistics/pal_statistics/pal_statistics_macros.hpp:244:32: note: expanded from macro 'UNREGISTER_ENTITY'
    244 | #define UNREGISTER_ENTITY(...) UNREGISTER_ENTITY_MACRO_CHOOSER(__VA_ARGS__)(__VA_ARGS__)
        |                                ^
  /opt/ros/rolling/include/pal_statistics/pal_statistics/pal_statistics_macros.hpp:242:29: note: expanded from macro 'UNREGISTER_ENTITY_MACRO_CHOOSER'
    242 |     UNREGISTER_ENTITY_2_ARGS)
        |                             ^
  /opt/ros/rolling/include/pal_statistics/pal_statistics/pal_statistics_macros.hpp:154:9: note: macro 'GET_4TH_ARG' defined here
    154 | #define GET_4TH_ARG(arg1, arg2, arg3, arg4, ...) arg4
        |         ^
  In file included from /home/runner/work/ros2_control/ros2_control/.work/target_ws/src/ros2_control/hardware_interface/test/test_hardware_components/test_imu_sensor.cpp:24:
  In file included from /home/runner/work/ros2_control/ros2_control/.work/target_ws/src/ros2_control/hardware_interface/include/hardware_interface/sensor_interface.hpp:26: