[wentasah]

Without these, I get the following build errors in latest rolling:

/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp: In member function 'virtual void rviz_imu_plugin::ImuDisplay::onEnable()':
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp:67:16: error: invalid use of incomplete type 'class Ogre::SceneNode'
   67 |     scene_node_->setVisible(true);
      |                ^~
In file included from /build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.h:37,
                 from /build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp:31:
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:52:7: note: forward declaration of 'class Ogre::SceneNode'
   52 | class SceneNode;
      |       ^~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp: In member function 'virtual void rviz_imu_plugin::ImuDisplay::onDisable()':
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp:78:16: error: invalid use of incomplete type 'class Ogre::SceneNode'
   78 |     scene_node_->setVisible(false);
      |                ^~
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:52:7: note: forward declaration of 'class Ogre::SceneNode'
   52 | class SceneNode;
      |       ^~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp: In member function 'virtual void rviz_imu_plugin::ImuDisplay::onInitialize()':
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp:86:33: error: invalid use of incomplete type 'class Ogre::SceneManager'
   86 |     scene_node_ = scene_manager_->getRootSceneNode()->createChildSceneNode();
      |                                 ^~
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:51:7: note: forward declaration of 'class Ogre::SceneManager'
   51 | class SceneManager;
      |       ^~~~~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/imu_display.cpp:98:16: error: invalid use of incomplete type 'class Ogre::SceneNode'
   98 |     scene_node_->setVisible(isEnabled());
      |                ^~
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:52:7: note: forward declaration of 'class Ogre::SceneNode'
   52 | class SceneNode;
      |       ^~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp: In member function 'virtual void rviz_imu_plugin::MagDisplay::onEnable()':
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp:50:16: error: invalid use of incomplete type 'class Ogre::SceneNode'
   50 |     scene_node_->setVisible(true);
      |                ^~
In file included from /build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.h:37,
                 from /build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp:31:
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:52:7: note: forward declaration of 'class Ogre::SceneNode'
   52 | class SceneNode;
      |       ^~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp: In member function 'virtual void rviz_imu_plugin::MagDisplay::onDisable()':
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp:59:16: error: invalid use of incomplete type 'class Ogre::SceneNode'
   59 |     scene_node_->setVisible(false);
      |                ^~
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:52:7: note: forward declaration of 'class Ogre::SceneNode'
   52 | class SceneNode;
      |       ^~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp: In member function 'virtual void rviz_imu_plugin::MagDisplay::onInitialize()':
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp:67:33: error: invalid use of incomplete type 'class Ogre::SceneManager'
   67 |     scene_node_ = scene_manager_->getRootSceneNode()->createChildSceneNode();
      |                                 ^~
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:51:7: note: forward declaration of 'class Ogre::SceneManager'
   51 | class SceneManager;
      |       ^~~~~~~~~~~~
/build/imu_tools-release-release-rolling-rviz_imu_plugin-2.2.4-2/src/mag_display.cpp:72:16: error: invalid use of incomplete type 'class Ogre::SceneNode'
   72 |     scene_node_->setVisible(isEnabled());
      |                ^~
/nix/store/h70jr156g5i17ppcyhfhpvrrxf7zs0li-ros-rolling-rviz-common-16.0.3-r1/include/rviz_common/rviz_common/display.hpp:52:7: note: forward declaration of 'class Ogre::SceneNode'
   52 | class SceneNode;
      |       ^~~~~~~~~

[mintar]

Thank you, merged!

Note to self: This build error could not be reproduced on the Github CI, because the CI uses the ros:rolling-ros-core Docker image, which still ships with the older versions of the dependencies, so it doesn't cause this build error. The Jenkins build farm however has the same errors that this PR is fixing: https://build.ros2.org/job/Rbin_unv8_uRv8__rviz_imu_plugin__ubuntu_resolute_arm64__binary/39/display/redirect