When auto-terminal-type detection is enabled, always use those term flags,

don't use the stored user terminal type. This allows the same user (e.g.
the sysop) to be logged onto multiple nodes concurrently with different
terminal types without effecting the other node/session.
Guest sessions were already immune to this problem.

src/sbbs3/con_out.cpp

@@ -244,7 +244,7 @@ void sbbs_t::backspace(void)
 /****************************************************************************/
 long sbbs_t::term_supports(long cmp_flags)
 {
-	long flags = sys_status&SS_USERON ? useron.misc : autoterm;
+	long flags = ((sys_status&SS_USERON) && !(useron.misc&AUTOTERM)) ? useron.misc : autoterm;
 
 	return(cmp_flags ? ((flags&cmp_flags)==cmp_flags) : (flags&TERM_FLAGS));
 }