fix: use sync dns.getDefaultResultOrder instead of dns.promises

[valerii-kuzivanov]

Summary

Fixes #22184

getLocalhostAddressIfDiffersFromDNS (introduced in #22151, commit 56ec256) calls dns.getDefaultResultOrder() — but dns is aliased from node:dns's promises namespace (import { promises as dns }), so it resolves to dns.promises.getDefaultResultOrder() at runtime.

Bun does not implement dns.promises.getDefaultResultOrder (tested on 1.3.10, 1.3.11 stable, 1.3.12 canary), causing vite build to fail since 8.0.6:

TypeError: promises.getDefaultResultOrder is not a function

getDefaultResultOrder is synchronous by nature — this PR imports it directly from node:dns (the sync/callback namespace) instead of going through dns.promises.

Change

• Import getDefaultResultOrder from node:dns alongside the existing promises import
• Call getDefaultResultOrder() directly instead of dns.getDefaultResultOrder()

Test plan

• vite build under Bun 1.3.x no longer throws
• No behavior change on Node.js — dns.getDefaultResultOrder exists on both dns and dns.promises in Node

[PratyushJayachandran]

Well this is still not working on deno, but I guess this is a deno issue: denoland/deno#33195

[romanfield]

deno --version
deno 2.7.11 (stable, release, x86_64-unknown-linux-gnu)
v8 14.7.173.7-rusty
typescript 5.9.2

deno task build
Task build vite build
error: Uncaught (in promise) SyntaxError: The requested module 'node:dns' does not provide an export named 'getDefaultResultOrder' at file:///mnt/work/moldova/node_modules/.deno/vite@8.0.7/node_modules/vite/dist/node/chunks/node.js:20:10
const { createBuilder } = await import("./chunks/build.js");
^
at async CAC. (file:///mnt/work/moldova/node_modules/.deno/vite@8.0.7/node_modules/vite/dist/node/cli.js:764:28)