chore: try set default value first

Author: sapphi-red

packages/vite/src/node/config.ts

@@ -878,6 +878,8 @@ export async function resolveConfig(
 
   const isBuild = command === 'build'
 
+  config = mergeConfig({ resolve: { conditions: DEFAULT_CONDITIONS } }, config)
+
   // run config hooks
   const userPlugins = [...prePlugins, ...normalPlugins, ...postPlugins]
   config = await runConfigHook(config, userPlugins, configEnv)