opus_header: fix channel mapping family 1 parsing

Fixes #27808

(cherry picked from commit 79fa6af0)

modules/codec/opus_header.c

@@ -205,7 +205,7 @@ int opus_header_parse(const unsigned char *packet, int len, OpusHeader *h)
         h->nb_coupled = ch;
 
         /* Multi-stream support */
-        if(h->channel_mapping == 2)
+        if(h->channel_mapping <= 2)
         {
             if (h->nb_coupled + h->nb_streams > 255)
                 return 0;