Refactor to use parseBoolean

What does this MR do?

This is a follow-up to ensure the approach of parsing dataset values remains consistent with the existing codebase pattern of using parseBoolean vs. the previous 'isSupportedContent' in el.dataset approach. Additional context can be seen here.

Screenshots

N/A

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content