AGD-3085 : fix cast crash

[BogdanZavu]

Purpose

Fix a crash when the renderPackage is not a HelixRenderPackage

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

[QilongTang]

Nice catch, can the crash case be written into a unit test?

[BogdanZavu]

@saintentropy @twastvedt FYI

[BogdanZavu]

@QilongTang I think this is more of an integration test ; this utility is not covered and it's usage is related to a more complex workflow which involves rendering - but it will be tested as part of player integration tests which are in the works.

[QilongTang]

@QilongTang I think this is more of an integration test ; this utility is not covered and it's usage is related to a more complex workflow which involves rendering - but it will be tested as part of player integration tests which are in the works.

Thank you! Make sense