 Menu: Properly unhighlight menu items with a callback that doesn't do anything (#7254)
 Menu: Properly unhighlight menu items with a callback that doesn't do anything (#7254)

Fix #7251
koreader/koreader,mwoz123/koreader,koreader/koreader,poire-z/koreader,Hzj-jie/koreader,NiLuJe/koreader,NiLuJe/koreader,Frenzie/koreader,poire-z/koreader,Frenzie/koreader