Replace use of should_check_namespace_plan? from the ee controller layer

What does this MR do and why?

Replace use of should_check_namespace_plan? from the ee controller layer

• when they are clearly subscription related items.
• this is merely 1 part and there will be more for this effort.
• see &16686 (closed) and #548397 (closed)

MR acceptance checklist

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Related to #548397 (closed)