fs: use missing validator for fsPromises

Refs: nodejs#39028

Author: VoltrexKeyva

lib/internal/fs/promises.js

@@ -29,7 +29,6 @@ const { Buffer } = require('buffer');
 const {
   codes: {
     ERR_FS_FILE_TOO_LARGE,
-    ERR_INVALID_ARG_TYPE,
     ERR_INVALID_ARG_VALUE,
     ERR_METHOD_NOT_IMPLEMENTED,
   },
@@ -74,6 +73,7 @@ const {
   validateBuffer,
   validateEncoding,
   validateInteger,
+  validateString,
 } = require('internal/validators');
 const pathModule = require('path');
 const { promisify } = require('internal/util');
@@ -708,9 +708,8 @@ async function realpath(path, options) {
 
 async function mkdtemp(prefix, options) {
   options = getOptions(options, {});
-  if (!prefix || typeof prefix !== 'string') {
-    throw new ERR_INVALID_ARG_TYPE('prefix', 'string', prefix);
-  }
+
+  validateString(prefix, 'prefix');
   nullCheck(prefix);
   warnOnNonPortableTemplate(prefix);
   return binding.mkdtemp(`${prefix}XXXXXX`, options.encoding, kUsePromises);