Remove optional chaining

What does this MR do?

Due to package-lock update, optional chaining is (somehow) not supported in our current stack. In order to push out the Alpha.5 release, this MR replaces uses of optional chaining operators to a supported syntax

Does this MR meet the acceptance criteria?

Conformity

• Code review guidelines (@mention any CODEOWNER to request a review)
• Added tests for new functionality