Fix bug that username missed on issue list assignee filter (#14481)

Co-authored-by: 6543 <6543@obermui.de>

templates/repo/issue/list.tmpl

@@ -71,7 +71,7 @@
 							<a class="item" href="{{$.Link}}?q={{$.Keyword}}&type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{.SelectLabels}}&milestone={{$.MilestoneID}}">{{.i18n.Tr "repo.issues.filter_assginee_no_select"}}</a>
 							{{range .Assignees}}
 								<a class="{{if eq $.AssigneeID .ID}}active selected{{end}} item" href="{{$.Link}}?type={{$.ViewType}}&sort={{$.SortType}}&state={{$.State}}&labels={{$.SelectLabels}}&milestone={{$.MilestoneID}}&assignee={{.ID}}">
-									{{avatar .}}
+									{{avatar .}} {{.GetDisplayName}}
 								</a>
 							{{end}}
 						</div>
@@ -178,7 +178,7 @@
 							</div>
 							{{range .Assignees}}
 								<div class="item issue-action" data-element-id="{{.ID}}" data-url="{{$.RepoLink}}/issues/assignee">
-									{{avatar .}}
+									{{avatar .}} {{.GetDisplayName}}
 								</div>
 							{{end}}
 						</div>