Resolve "Take DAG visualization out of beta"

What does this MR do?

Take the DAG visualization out of beta by removing the tag and documentation around this feature in beta.

Screenshots

Before

After

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