fix: set /app as redirect for pageview home button (#17715) (#17717)

(cherry picked from commit 9b620bb648)

Co-authored-by: Ritwik Puri <ritwikpuri5678@gmail.com>

frappe/public/js/frappe/views/pageview.js

@@ -138,7 +138,7 @@ frappe.show_message_page = function(opts) {
 			<div class="text-center message-page-content">\
 				%(img)s\
 				<p class="lead">%(message)s</p>\
-				<a class="btn btn-default btn-sm btn-home" href="#">%(home)s</a>\
+				<a class="btn btn-default btn-sm btn-home" href="/app">%(home)s</a>\
 			</div>\
 		</div>', {
 				img: opts.img || "",