Namespace conflict header fix

Created by: DariushMoh

Description

Namespace conflict header moved from stop to start in gNodeB and ue controllers

Reviewers list

• @guillaume.everartsdevelp

Self Check:

Strike through any lines that are not applicable (~~line~~) then check the box

• Correct, in line with design
• Sufficient test cases (reproduces the bug/tests the requested feature)
• Code is clear and sufficiently documented (classes, methods and function docs, document important assumptions, link to reference materials)
• Type annotations
• Issue is in the review column
• MR is assigned to first reviewer