Renamed 'Overview' to 'Project' in collapsed contextual navigation at a project level

What does this MR do?

Renames 'Overview' to 'Project' in collapsed contextual navigation at a project level

Why was this MR needed?

#46407 (closed)

Screenshots (if relevant)

Before	After

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Tests added for this feature/bug
• Conform by the code review guidelines
  • Has been reviewed by a UX Designer
  • Has been reviewed by a Frontend maintainer
• Conform by the merge request performance guides
• Conform by the style guides
• If you have multiple commits, please combine them into a few logically organized commits by squashing themd
• End-to-end tests pass (package-and-qa manual pipeline job)

What are the relevant issue numbers?

#46407 (closed)