pk: implement non-PSA mbedtls_pk_sign_ext()

This makes the function always available with its
its implementation depending on MBEDTLS_USE_PSA_CRYPTO.

Related dependencies and tests are updated as well.

Fixes #7583.

Signed-off-by: Tomi Fontanilles <129057597+tomi-font@users.noreply.github.com>
diff --git a/library/pk_wrap.h b/library/pk_wrap.h
index 28c815a..a6237bf 100644
--- a/library/pk_wrap.h
+++ b/library/pk_wrap.h
@@ -131,6 +131,14 @@
 #endif
 #endif
 
+#if defined(MBEDTLS_RSA_C)
+int mbedtls_pk_psa_rsa_sign_ext(psa_algorithm_t psa_alg_md,
+                                mbedtls_rsa_context *rsa_ctx,
+                                const unsigned char *hash, size_t hash_len,
+                                unsigned char *sig, size_t sig_size,
+                                size_t *sig_len);
+#endif /* MBEDTLS_RSA_C */
+
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
 #if defined(MBEDTLS_PSA_CRYPTO_C)
@@ -143,14 +151,6 @@
 #endif /* PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY || PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_BASIC */
 #endif /* !MBEDTLS_DEPRECATED_REMOVED */
 
-#if defined(MBEDTLS_RSA_C)
-int mbedtls_pk_psa_rsa_sign_ext(psa_algorithm_t psa_alg_md,
-                                mbedtls_rsa_context *rsa_ctx,
-                                const unsigned char *hash, size_t hash_len,
-                                unsigned char *sig, size_t sig_size,
-                                size_t *sig_len);
-#endif /* MBEDTLS_RSA_C */
-
 #endif /* MBEDTLS_PSA_CRYPTO_C */
 
 #endif /* MBEDTLS_PK_WRAP_H */