Hide "Suggest wiki improvement" button on "Wiki" pages from Auditors

Auditors have read-only permissions so can't create issues. Button
returned a 404

app/views/shared/empty_states/_wikis.html.haml

@@ -18,14 +18,14 @@
 
 - elsif @project && can?(current_user, :read_issue, @project)
   - issues_link = link_to s_('WikiEmptyIssueMessage|issue tracker'), project_issues_path(@project)
-  - new_issue_link = link_to s_('WikiEmpty|Suggest wiki improvement'), new_project_issue_path(@project), class: 'btn gl-button btn-confirm', title: s_('WikiEmptyIssueMessage|Suggest wiki improvement')
 
   = render layout: layout_path, locals: { image_path: 'illustrations/wiki_logout_empty.svg' } do
     %h4
       = messages.dig(:issuable, :title)
     %p.text-left
       = messages.dig(:issuable, :body).html_safe % { issues_link: issues_link }
-    = new_issue_link
+    - if show_new_issue_link?(@project)
+      = link_to s_('WikiEmpty|Suggest wiki improvement'), new_project_issue_path(@project), class: 'btn gl-button btn-confirm', title: s_('WikiEmptyIssueMessage|Suggest wiki improvement')
 
 - else
   = render layout: layout_path, locals: { image_path: 'illustrations/wiki_logout_empty.svg' } do

ee/changelogs/unreleased/324972-hide-suggest-wiki-improvement-button-on-wiki-page-from-auditors.yml

+---
+title: Hide "Suggest wiki improvement" button from Auditors on project wiki page
+merge_request: 56897
+author:
+type: fixed

ee/spec/features/projects/wiki/user_views_wiki_empty_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Project > User views empty wiki' do
+  let_it_be(:auditor) { create(:user, auditor: true) }
+  let_it_be(:project) { create(:project, :private) }
+  let_it_be(:wiki) { create(:project_wiki, project: project) }
+
+  context 'when signed in user is an Auditor' do
+    before do
+      sign_in(auditor)
+    end
+
+    it 'shows empty state without "Suggest wiki improvement" button' do
+      visit wiki_path(wiki)
+
+      expect(page).to have_content('This project has no wiki pages')
+      expect(page).to have_content('You must be a project member in order to add wiki pages. If you have suggestions for how to improve the wiki for this project, consider opening an issue in the issue tracker.')
+      expect(page).not_to have_link('Suggest wiki improvement')
+    end
+  end
+end