message: trim whitespace from `environmentSetupScript`
diff: @@ -616,7 +616,7 @@ export async function getShellScriptEnvironment(kit: Kit, opts?: expand.Expansio
  let script = '';
  let run_command = '';
  - let environmentSetupScript = kit.environmentSetupScript;
  + let environmentSetupScript = kit.environmentSetupScript?.trim();
  if (opts) {
  environmentSetupScript = await expand.expandString(environmentSetupScript!, opts);
  }
  