PBS Bid Adapter: fix s2s alias collision with built-in adapter aliasing (#6379)
PBS Bid Adapter: fix s2s alias collision with built-in adapter aliasing (#6379)

* fixed overwriting of aliases for s2s

* made change

* added fix
ImproveDigital/Prebid.js,prebid/Prebid.js,tchibirev/Prebid.js,ImproveDigital/Prebid.js,PubWise/Prebid.js,gumgum/Prebid.js,mcallari/Prebid.js,gumgum/Prebid.js,PWyrembak/Prebid.js,prebid/Prebid.js,HuddledMasses/Prebid.js,PubWise/Prebid.js,Niksok/Prebid.js,PWyrembak/Prebid.js,ImproveDigital/Prebid.js,Niksok/Prebid.js,PubWise/Prebid.js,tchibirev/Prebid.js,prebid/Prebid.js,gumgum/Prebid.js,HuddledMasses/Prebid.js,PWyrembak/Prebid.js,HuddledMasses/Prebid.js,Niksok/Prebid.js,mcallari/Prebid.js