Fix empty action run title (go-gitea#28113)

Fix go-gitea#27901

Author: lunny

options/locale/locale_en-US.ini

@@ -3531,6 +3531,7 @@ runs.actors_no_select = All actors
 runs.status_no_select = All status
 runs.no_results = No results matched.
 runs.no_runs = The workflow has no runs yet.
+runs.empty_commit_message = (empty commit message)
 
 workflow.disable = Disable Workflow
 workflow.disable_success = Workflow '%s' disabled successfully.

templates/repo/actions/runs_list.tmpl

@@ -12,7 +12,7 @@
 			</div>
 			<div class="flex-item-main">
 				<a class="flex-item-title" title="{{.Title}}" href="{{if .Link}}{{.Link}}{{else}}{{$.Link}}/{{.Index}}{{end}}">
-					{{- .Title -}}
+					{{if .Title}}{{.Title}}{{else}}{{ctx.Locale.Tr "actions.runs.empty_commit_message"}}{{end}}
 				</a>
 				<div class="flex-item-body">
 					<b>{{if not $.CurWorkflow}}{{.WorkflowID}} {{end}}#{{.Index}}</b>: