MM-54004 migrate HeaderFooterNotLoggedIn as functional component (#24244)

* chore: MM-54004 migrate HeaderFooterNotLoggedIn as functional component

* fix about and HA links

server/public/model/config.go

@@ -133,7 +133,7 @@ const (
 
 	SupportSettingsDefaultTermsOfServiceLink = "https://mattermost.com/pl/terms-of-use/"
 	SupportSettingsDefaultPrivacyPolicyLink  = "https://mattermost.com/pl/privacy-policy/"
-	SupportSettingsDefaultAboutLink          = "https://mattermost.com/pl/about-mattermomst"
+	SupportSettingsDefaultAboutLink          = "https://mattermost.com/pl/about-mattermost"
 	SupportSettingsDefaultHelpLink           = "https://mattermost.com/pl/help/"
 	SupportSettingsDefaultReportAProblemLink = "https://mattermost.com/pl/report-a-bug"
 	SupportSettingsDefaultSupportEmail       = ""