providers/implementations/exchange/kdf_exch.c: fix unavailable SIZE_MAX

SIZE_MAX is used in a recent fix of this file, but without including
internal/numbers.h, so that macro ends up not existing on some platforms,
resulting in build failures.

Reviewed-by: Tomas Mraz <[email protected]>
Reviewed-by: Dmitry Belyavskiy <[email protected]>
Reviewed-by: Paul Dale <[email protected]>
(Merged from openssl#18605)

Author: levitte

providers/implementations/exchange/kdf_exch.c

@@ -14,6 +14,7 @@
 #include <openssl/err.h>
 #include <openssl/proverr.h>
 #include <openssl/params.h>
+#include "internal/numbers.h"
 #include "prov/implementations.h"
 #include "prov/provider_ctx.h"
 #include "prov/kdfexchange.h"