Fix flash message for flex-container (#30657)

templates/user/dashboard/dashboard.tmpl

@@ -1,9 +1,9 @@
 {{template "base/head" .}}
 <div role="main" aria-label="{{.Title}}" class="page-content dashboard feeds">
 	{{template "user/dashboard/navbar" .}}
-	{{template "base/alert" .}}
 	<div class="ui container flex-container">
 		<div class="flex-container-main">
+			{{template "base/alert" .}}
 			{{template "user/heatmap" .}}
 			{{template "user/dashboard/feeds" .}}
 		</div>