daemon-helper: include "libnm-std-aux/nm-default-std.h" as first in "nm-daemon-helper.c"

All our sources should include one of the "nm-default*.h" headers
first. That one drags in <config.h>, which must be included first
and a few other basics.

Which is the right "nm-default*.h" header depends on the component. In
case of "nm-daemon-helper.c", it's "libnm-std-aux/nm-default-std.h".

src/nm-daemon-helper/nm-daemon-helper.c

@@ -2,6 +2,8 @@
 
 /* Copyright (C) 2021 Red Hat, Inc. */
 
+#include "libnm-std-aux/nm-default-std.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <arpa/inet.h>
@@ -10,8 +12,6 @@
 #include <nss.h>
 #endif
 
-#include "libnm-std-aux/nm-std-aux.h"
-
 enum {
     RETURN_SUCCESS      = 0,
     RETURN_INVALID_CMD  = 1,