Revert "schannel: reverse the order of certinfo insertions"

This reverts commit 8986df8.

Windows does not guarantee a particular certificate ordering, even
though TLS may have its own ordering/relationship guarantees. Recent
versions of Windows 11 reversed the ordering of ceritifcates returned by
CertEnumCertificatesInStore, therefore this commit no longer works as
initially intended. libcurl makes no guarantees about certificate
ordering if the operating system can't.

Ref: curl#9706

Closes curl#11536

lib/vtls/schannel.c

@@ -1665,7 +1665,6 @@ struct Adder_args
   struct Curl_easy *data;
   CURLcode result;
   int idx;
-  int certs_count;
 };
 
 static bool
@@ -1676,10 +1675,7 @@ add_cert_to_certinfo(const CERT_CONTEXT *ccert_context, void *raw_arg)
   if(valid_cert_encoding(ccert_context)) {
     const char *beg = (const char *) ccert_context->pbCertEncoded;
     const char *end = beg + ccert_context->cbCertEncoded;
-    int insert_index = (args->certs_count - 1) - args->idx;
-    args->result = Curl_extract_certinfo(args->data, insert_index,
-                                         beg, end);
-    args->idx++;
+    args->result = Curl_extract_certinfo(args->data, (args->idx)++, beg, end);
   }
   return args->result == CURLE_OK;
 }
@@ -1813,7 +1809,6 @@ schannel_connect_step3(struct Curl_cfilter *cf, struct Curl_easy *data)
       struct Adder_args args;
       args.data = data;
       args.idx = 0;
-      args.certs_count = certs_count;
       traverse_cert_store(ccert_context, add_cert_to_certinfo, &args);
       result = args.result;
     }