Test and fix all combinations of pipeline processing

What does this MR do?

This tries to solve the #216258 (closed).

This is based on !29405 (merged).

We need to cartesian test legacy and atomic processing with different feature flags.

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