Add No Results Prompt Message on Issue List Page (#33699)

options/locale/locale_en-US.ini

@@ -1465,6 +1465,8 @@ issues.filter_milestones = Filter Milestone
 issues.filter_projects = Filter Project
 issues.filter_labels = Filter Label
 issues.filter_reviewers = Filter Reviewer
+issues.filter_no_results = No results
+issues.filter_no_results_placeholder = Try adjusting your search filters.
 issues.new = New Issue
 issues.new.title_empty = Title cannot be empty
 issues.new.labels = Labels

templates/shared/issuelist.tmpl

@@ -153,6 +153,11 @@
 			</div>
 			{{end}}
 		</div>
+	{{else}}
+		<div class="tw-text-center tw-p-8">
+			<h3 class="tw-my-4">{{ctx.Locale.Tr "repo.issues.filter_no_results"}}</h3>
+			<p class="tw-text-placeholder-text">{{ctx.Locale.Tr "repo.issues.filter_no_results_placeholder"}}</p>
+		</div>
 	{{end}}
 	{{if .IssueIndexerUnavailable}}
 		<div class="ui error message">