Do Raid tokens prevent discarding tokens for upgrade activation? Specifically, if BT Avenger received an anti-squadron Raid token, does that prevent discarding of the Squadron token for activating Boarding Troopers until the Raid token itself is removed from the ship?

Or, as another example, is Intensify Firepower blocked from use via discarding the Concentrate Fire token while its ship has a CF Raid token?

(Did a quick forum search and Unofficial FAQ search and didn't find anything on this topic.)

No on all special effects.

All the raid token is doing is preventing the command from being resolved (the command, and only the command). If the Avenger has a squadron raid token, it cannot resolve a squadron command. But it is allowed to spend the token for anything else.