chore: pnpm create already comes with npm_config_user_agent

Author: haoqunjiang

index.ts

@@ -396,8 +396,6 @@ async function init() {
 
   // Instructions:
   // Supported package managers: pnpm > yarn > npm
-  // Note: until <https://github.com/pnpm/pnpm/issues/3505> is resolved,
-  // it is not possible to tell if the command is called by `pnpm init`.
   const userAgent = process.env.npm_config_user_agent ?? ''
   const packageManager = /pnpm/.test(userAgent) ? 'pnpm' : /yarn/.test(userAgent) ? 'yarn' : 'npm'