chore: optimize bitflags accessors in ParentSync

[noellie-velez]

Purpose of this PR

Jira ticket

MTT-13999

Changelog

Changed: Optimized performance of ParentSyncMessage

Documentation

• No documentation changes or additions were necessary.

Testing & QA (How your changes can be verified during release Playtest)

Functional Testing

Manual testing :

• [ ] Manual testing done

Automated tests:

• [x] Covered by existing automated tests
• [ ] Covered by new automated tests

Does the change require QA team to:

• [ ] Review automated tests?
• [ ] Execute manual tests?
• [ ] Provide feedback about the PR?

If any boxes above are checked the QA team will be automatically added as a PR reviewer.

Backports