chan_sip: Incorrect display option Outbound reg. retry 403

If in sip.conf (general section) set option register_retry_403=no,
the command "sip show settings" return value:
Outbound reg. retry 403:0
If in sip.conf (general section) set option register_retry_403=yes,
the command "sip show settings" return value:
Outbound reg. retry 403:-1

* In static char "sip show settings" for "Outbound.reg. retry 403"
option use AST_CLI_YESNO

ASTERISK-26476 #close

Change-Id: I3c14272f05f1067bd2aeaa8b3ef9cf8fcb12dcf9

channels/chan_sip.c

@@ -21585,7 +21585,7 @@ static char *sip_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_
 	ast_cli(a->fd, "  Sub. max duration:      %d secs\n", max_subexpiry);
 	ast_cli(a->fd, "  Outbound reg. timeout:  %d secs\n", global_reg_timeout);
 	ast_cli(a->fd, "  Outbound reg. attempts: %d\n", global_regattempts_max);
-	ast_cli(a->fd, "  Outbound reg. retry 403:%d\n", global_reg_retry_403);
+	ast_cli(a->fd, "  Outbound reg. retry 403:%s\n", AST_CLI_YESNO(global_reg_retry_403));
 	ast_cli(a->fd, "  Notify ringing state:   %s\n", AST_CLI_YESNO(sip_cfg.notifyringing));
 	if (sip_cfg.notifyringing) {
 		ast_cli(a->fd, "    Include CID:          %s%s\n",