Fix showing import button on empty issue list page

What does this MR do and why?

Fix showing import button on empty issue list page

This fixes a bug where the "Import Issues" button no longer showed up when a project had no issues. It also only shows "New Project" on the empty state when on the empty group issue list.

This bug is only visible when work_items_project_issues_list is enabled (which got enabled by default recently Default enable work_items_project_issues_list (!204139 - merged)).

Changelog: fixed

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