Fix bug on security config page

ee/app/presenters/projects/security/configuration_presenter.rb

@@ -22,7 +22,10 @@ module Projects
           latest_pipeline_path: latest_pipeline_path,
           auto_fix_enabled: autofix_enabled,
           can_toggle_auto_fix_settings: auto_fix_permission,
-          gitlab_ci_present: project.uses_default_ci_config?,
+          # TODO: gitlab_ci_present will incorrectly report `false` if the CI/CD configuration file name
+          # has been customized and a file with the given custom name exists in the repo. This edge case
+          # will be addressed in https://gitlab.com/gitlab-org/gitlab/-/issues/342465
+          gitlab_ci_present: project.repository.gitlab_ci_yml.present?,
           gitlab_ci_history_path: gitlab_ci_history_path,
           auto_fix_user_path: '/' # TODO: real link will be updated with https://gitlab.com/gitlab-org/gitlab/-/issues/215669
         }

ee/spec/presenters/projects/security/configuration_presenter_spec.rb

@@ -262,14 +262,25 @@ RSpec.describe Projects::Security::ConfigurationPresenter do
       end
 
       context "while retrieving information about gitlab ci file" do
-        it 'expects the gitlab_ci_presence to be true if the file is present' do
-          expect(subject[:gitlab_ci_present]).to eq(true)
-        end
+        context 'when a .gitlab-ci.yml file exists' do
+          before do
+            project.repository.create_file(
+              project.creator,
+              Gitlab::FileDetector::PATTERNS[:gitlab_ci],
+              'contents go here',
+              message: 'test',
+              branch_name: 'master')
+          end
 
-        it 'expects the gitlab_ci_presence to be false if the file is customized' do
-          allow(project).to receive(:ci_config_path).and_return('.other-gitlab-ci.yml')
+          it 'expects gitlab_ci_present to be true' do
+            expect(subject[:gitlab_ci_present]).to eq(true)
+          end
+        end
 
-          expect(subject[:gitlab_ci_present]).to eq(false)
+        context 'when a .gitlab-ci.yml file does not exist' do
+          it 'expects gitlab_ci_present to be false if the file is not present' do
+            expect(subject[:gitlab_ci_present]).to eq(false)
+          end
         end
       end