Add icon to buttons "Close with Comment", "Close Pull Request", "Close Issue" (#36654)

Newbies often use the "Close with Comments" button instead of deleting
their comment. Icon should prevent mis-clicks.

---------

Co-authored-by: Yuriy.Khlynovskiy <yuriy.khlynovskiy@incomsystem.ru>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/user/settings/applications_oauth2_list.tmpl

@@ -21,12 +21,12 @@
 						<span class="ui basic label" data-tooltip-content="{{ctx.Locale.Tr "settings.oauth2_application_locked"}}">{{ctx.Locale.Tr "locked"}}</span>
 					{{else}}
 						<a href="{{$.Link}}/oauth2/{{.ID}}" class="ui primary tiny button">
-							{{svg "octicon-pencil" 16 "tw-mr-1"}}
+							{{svg "octicon-pencil"}}
 							{{ctx.Locale.Tr "settings.oauth2_application_edit"}}
 						</a>
 						<button class="ui red tiny button delete-button" data-modal-id="remove-gitea-oauth2-application"
 								data-url="{{$.Link}}/oauth2/{{.ID}}/delete">
-							{{svg "octicon-trash" 16 "tw-mr-1"}}
+							{{svg "octicon-trash"}}
 							{{ctx.Locale.Tr "settings.delete_key"}}
 						</button>
 					{{end}}