FS-10622: [core] Auto-fixing audio codec from G722 to PCMU although PCMU was not…

FS-10622: [core] Auto-fixing audio codec from G722 to PCMU although PCMU was not negotiated #resolve

src/switch_core_media.c

@@ -2888,6 +2888,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_media_read_frame(switch_core_session
 					(!smh->mparams->cng_pt || engine->read_frame.payload != smh->mparams->cng_pt) &&
 					(!smh->mparams->recv_te || engine->read_frame.payload != smh->mparams->recv_te) &&
 					(!smh->mparams->te || engine->read_frame.payload != smh->mparams->te) &&
+					!switch_test_flag((&engine->read_frame), SFF_CNG) &&
 					engine->read_frame.payload != engine->cur_payload_map->recv_pt &&
 					engine->read_frame.payload != engine->cur_payload_map->pt) {