Send silent join/leave messages for locked users
Send silent join/leave messages for locked users

This fixes a possible inconsistent state issue for clients that rely
on join/leave messages to sync user lists.

AWailOfATail/Pokemon-Showdown,xCrystal/Pokemon-Showdown,AustinXII/Pokemon-Showdown,panpawn/Gold-Server,QuiteQuiet/Pokemon-Showdown,Sora-League/Sora,xfix/Pokemon-Showdown,xfix/Pokemon-Showdown,svivian/Pokemon-Showdown,Mystifi/Exiled,AWailOfATail/Pokemon-Showdown,azum4roll/Pokemon-Showdown,panpawn/Pokemon-Showdown,SolarisFox/Pokemon-Showdown,svivian/Pokemon-Showdown,Mystifi/Exiled,Sora-League/Sora,urkerab/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,jumbowhales/Pokemon-Showdown,AWailOfATail/Pokemon-Showdown,xfix/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,AustinXII/Pokemon-Showdown,Enigami/Pokemon-Showdown,Mystifi/Exiled,Lord-Haji/SpacialGaze,Zarel/Pokemon-Showdown,Lord-Haji/SpacialGaze,DesoGit/Tsunami_PS,sirDonovan/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,QuiteQuiet/Pokemon-Showdown,Zarel/Pokemon-Showdown,DesoGit/Tsunami_PS,Enigami/Pokemon-Showdown,PS-Spectral/Spectral,sirDonovan/Pokemon-Showdown,xfix/Pokemon-Showdown,Enigami/Pokemon-Showdown,HoeenCoder/SpacialGaze,PS-Spectral/Spectral,Enigami/Pokemon-Showdown,urkerab/Pokemon-Showdown,xfix/Pokemon-Showdown,svivian/Pokemon-Showdown,HoeenCoder/SpacialGaze,svivian/Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,AustinXII/Pokemon-Showdown,aakashrajput/Pokemon-Showdown,jumbowhales/Pokemon-Showdown,panpawn/Gold-Server,ShowdownHelper/Saffron,HoeenCoder/SpacialGaze,Sora-League/Sora,Lord-Haji/SpacialGaze,azum4roll/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,PS-Spectral/Spectral,aakashrajput/Pokemon-Showdown,svivian/Pokemon-Showdown,HoeenCoder/SpacialGaze,panpawn/Pokemon-Showdown,xCrystal/Pokemon-Showdown,Zarel/Pokemon-Showdown,urkerab/Pokemon-Showdown,xCrystal/Pokemon-Showdown,danpantry/Pokemon-Showdown,TbirdClanWish/Pokemon-Showdown,ShowdownHelper/Saffron,ShowdownHelper/Saffron,DesoGit/Tsunami_PS,danpantry/Pokemon-Showdown,CreaturePhil/Showdown-Boilerplate,SolarisFox/Pokemon-Showdown,panpawn/Gold-Server,QuiteQuiet/Pokemon-Showdown