Add gl-form-input for project issue template settings

ee/app/views/projects/settings/_default_issue_template.html.haml

@@ -12,7 +12,7 @@
         %input{ type: 'hidden', name: 'update_section', value: 'js-issue-settings' }
         .row
           .form-group.col-md-9
-            = f.text_area :issues_template, class: "form-control", rows: 3, aria: { labelledby: 'issue-settings-default-template-label'}, data: { qa_selector: 'issue_template_field' }
+            = f.text_area :issues_template, class: "form-control gl-form-input", rows: 3, aria: { labelledby: 'issue-settings-default-template-label'}, data: { qa_selector: 'issue_template_field' }
             .text-secondary
               - link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: help_page_path('user/markdown') }
               = _('Description parsed with %{link_start}GitLab Flavored Markdown%{link_end}.').html_safe % { link_start: link_start, link_end: '</a>'.html_safe }

ee/changelogs/unreleased/gl-form-issue-template.yml

+---
+title: Add gl-form-input for project issue template settings
+merge_request: 58046
+author: Yogi (@yo)
+type: changed