General: Apply ZSpawn logic on late spawners.

Improvement on `a45be16399`

src/zr/infect.inc

@@ -278,14 +278,10 @@ InfectOnClientSpawn(client)
     // Disable zombie flag on client.
     g_bZombie[client] = false;
 
-    // Check if client is spawning on the terrorist team.
-    if (ZRIsClientOnTeam(client, CS_TEAM_T) && InfectHasZombieSpawned())
-    {
-        CS_SwitchTeam(client, CS_TEAM_CT);
-        CS_RespawnPlayer(client);
-    }
-
     InfectUnglitchKevlar(client);
+
+    // Forward event to modules.
+    ZSpawnOnClientSpawn(client);
 }
 
 /**