fix(ext/node): fix dns.lookup result ordering (#26264)

partially unblocks #25470

This PR aligns the resolution of `localhost` hostname to Node.js
behavior.

In Node.js `dns.lookup("localhost", (_, addr) => console.log(addr))`
prints ipv6 address `::1`, but it prints ipv4 address `127.0.0.1` in
Deno. That difference causes some errors in the work of enabling
`createConnection` option in `http.request` (#25470). This PR fixes the
issue by aligning `dns.lookup` behavior to Node.js.

This PR also changes the following behaviors (resolving TODOs):
- `http.createServer` now listens on ipv6 address `[::]` by default on
linux/mac
- `net.createServer` now listens on ipv6 address `[::]` by default on
linux/mac

These changes are also alignments to Node.js behaviors.

1 files changed, 2 insertions, 12 deletions

diff --git a/ext/node/polyfills/internal/dns/utils.ts b/ext/node/polyfills/internal/dns/utils.ts
index 226fce93d..1e0c3d9ed 100644
--- a/ext/node/polyfills/internal/dns/utils.ts
+++ b/ext/node/polyfills/internal/dns/utils.ts
@@ -416,20 +416,10 @@ export function emitInvalidHostnameWarning(hostname: string) {
   );
 }
 
-let dnsOrder = getOptionValue("--dns-result-order") || "ipv4first";
+let dnsOrder = getOptionValue("--dns-result-order") || "verbatim";
 
 export function getDefaultVerbatim() {
-  switch (dnsOrder) {
-    case "verbatim": {
-      return true;
-    }
-    case "ipv4first": {
-      return false;
-    }
-    default: {
-      return false;
-    }
-  }
+  return dnsOrder !== "ipv4first";
 }
 
 /**