Resolve "Add new project via import by URL auto populates slug but not project name"

What does this MR do?

Removes the required attribute from the project name field on the 'Create project' page.

What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ce/issues/51522

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides

Closes #51522 (closed)