Pass context to avatar for projects view (#23359) (#23378)

Backport of #23359.

Previously, a 500 response was returned when

- an issue had assignees
- the issue was assigned to a project
- you tried to view this project

templates/projects/view.tmpl

@@ -238,7 +238,7 @@
 							{{end}}
 							<div class="right floated">
 								{{range .Assignees}}
-									<a class="tooltip" target="_blank" href="{{.HomeLink}}" data-content="{{$.locale.Tr "repo.projects.board.assigned_to"}} {{.Name}}">{{avatar . 28 "mini gt-mr-3"}}</a>
+									<a class="tooltip" target="_blank" href="{{.HomeLink}}" data-content="{{$.locale.Tr "repo.projects.board.assigned_to"}} {{.Name}}">{{avatar $.Context . 28 "mini gt-mr-3"}}</a>
 								{{end}}
 							</div>
 						</div>