Allow empty assignees on pull request edit (#22150) (#22213)

Backport of #22150

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

routers/api/v1/repo/pull.go

@@ -488,6 +488,11 @@ func EditPullRequest(ctx *context.APIContext) {
 	issue := pr.Issue
 	issue.Repo = ctx.Repo.Repository
 
+	if err := issue.LoadAttributes(ctx); err != nil {
+		ctx.Error(http.StatusInternalServerError, "LoadAttributes", err)
+		return
+	}
+
 	if !issue.IsPoster(ctx.Doer.ID) && !ctx.Repo.CanWrite(unit.TypePullRequests) {
 		ctx.Status(http.StatusForbidden)
 		return

templates/package/content/container.tmpl

@@ -42,7 +42,7 @@
 	{{end}}
 	{{if .PackageDescriptor.Metadata.ImageLayers}}
 		<h4 class="ui top attached header">{{.i18n.Tr "packages.container.layers"}}</h4>
-		<div class="ui attached segment">
+		<div class="ui attached segment word-break">
 			<table class="ui very basic compact table">
 				<tbody>
 					{{range .PackageDescriptor.Metadata.ImageLayers}}