dns: Always enable DNS request for our DNSPort

Commit 41cc1f612bd2112ab7cec0cc4fdeb68c26e231bf introduced a "dns_request"
configuration value which wasn't set to 1 for an entry connection on the
DNSPort leading to a refusal to resolve the given hostname.

This commit set the dns_request flag by default for every entry connection
made to the DNSPort.

Fixes #20109

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/or/dnsserv.c

@@ -136,6 +136,8 @@ evdns_server_callback(struct evdns_server_request *req, void *data_)
     entry_conn->socks_request->command = SOCKS_COMMAND_RESOLVE_PTR;
   }
 
+  /* This serves our DNS port so enable DNS request by default. */
+  entry_conn->entry_cfg.dns_request = 1;
   if (q->type == EVDNS_TYPE_A || q->type == EVDNS_QTYPE_ALL) {
     entry_conn->entry_cfg.ipv4_traffic = 1;
     entry_conn->entry_cfg.ipv6_traffic = 0;