[CS] player_weaponstrip + amoury_entity does not work properly

[tyftler]

If a player has a primary weapon and goes through a trigger_multiple which calls a player_wepaonstrip, he will not be able to pick up an amoury_entity as long as he is not given a primary weapon by a game_player_equip and drops this weapon manually. However, a weapon that has been dropped by another player can still be picked up.

[xPaw]

Dupe #1089