Don't have g_teamAutoJoin affect bot's team

Bots set their team later, setting it here causes some bots to change team and die later. Can cause extra skulls to be spawn at beginning of harvester (bug #5740).

code/game/g_session.c

@@ -107,7 +107,7 @@ void G_InitSessionData( gclient_t *client, char *userinfo ) {
 
 	// initial team determination
 	if ( g_gametype.integer >= GT_TEAM ) {
-		if ( g_teamAutoJoin.integer ) {
+		if ( g_teamAutoJoin.integer && !(g_entities[ client - level.clients ].r.svFlags & SVF_BOT) ) {
 			sess->sessionTeam = PickTeam( -1 );
 			BroadcastTeamChange( client, -1 );
 		} else {