Hotfix v1.2.4

[p]v1.2.4[/p][p]Fix bagel distortion still exist after enter next level[/p][p]Fix 466 boss, player cannot switch others to spectate[/p][p]Fix shut them down, client cannot see heads[/p][p]Fix 2D character, cannot switch to gun[/p][p]Fix skeleton bosses, head aim wrong direction when it chasing and killing
Fix most of the connection and synchronize problem for bosses in chapter 1 & 2
Reduce the diffculty of chapter 1 boss 166[/p]