Utilizes return value of AddBvhAnimation func

[onurtore]

🦟 Bug fix

Related to https://github.com/gazebosim/gz-common/pull/393

Summary

During actor creation adding bvh animation might fail. The current approach does not check whether bvh animation fails or not. This patch, checks whether adding bvh animation is succesfull and logs if fails.

Checklist

• [X] 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

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[codecov[bot]]

Codecov Report

:exclamation: No coverage uploaded for pull request base (gz-sim7@c647de6). Click here to learn what that means. The diff coverage is n/a.

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[nkoenig]

Thanks for the PR. I've updated this and targeted to version 6 in #1750.