The page title field cannot be made mandatory at space level

The xwiki.title.mandatory property of the XWiki.XWikiPreferences class cannot be configured in a WebPreferences page, because in the code its value is checked with xwiki.getXWikiPreference('xwiki.title.mandatory').

There are 2 places to fix the code:
https://github.com/xwiki/xwiki-platform/blob/9b2dae17d8559deda71b3993976ffeb966b9a487/xwiki-platform-core/xwiki-platform-flamingo/xwiki-platform-flamingo-skin/xwiki-platform-flamingo-skin-resources/src/main/resources/flamingo/editmeta.vm#L44
https://github.com/xwiki/xwiki-platform/blob/8119b9201ff00c1eb26f7f3d34f078c720c97fea/xwiki-platform-core/xwiki-platform-appwithinminutes/xwiki-platform-appwithinminutes-ui/src/main/resources/AppWithinMinutes/Title.xml#L56