Fix loading wold with record topic

[iche033]

🦟 Bug fix

Summary

fix infinite loop when loading a world with LogRecord plugin and additional record_topic cmd line arg

Looks like this bug does not exist (or already fixed) in gz-sim7.

To test:

modify log_record_shapes.sdf and add an extra sdf plugin param <record_topic>/world/shapes/clock</record_topic> to the the LogRecord plugin, i.e.

    <plugin
      filename="ignition-gazebo-log-system"
      name="ignition::gazebo::systems::LogRecord">
      <record_topic>/world/shapes/clock</record_topic>
    </plugin>

launch gazebo with the following cmd line arg and verify that it does not go into infinite loop

ign gazebo -v 4 --record_topic /clock ./log_record_shapes.sdf

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.