vfs: import getVirtualFd eagerly in streams

internal/vfs/fd.js doesn't require any internal/vfs/* modules so
there's no circular dependency to defer. Replace the getLazy wrapper
with a direct import.

Assisted-by: Claude-Opus4.7

Author: mcollina

lib/internal/vfs/streams.js

@@ -7,19 +7,15 @@ const {
 const { Buffer } = require('buffer');
 const { Readable, Writable } = require('stream');
 const { createEBADF } = require('internal/vfs/errors');
-const { getLazy, kEmptyObject } = require('internal/util');
+const { getVirtualFd } = require('internal/vfs/fd');
+const { kEmptyObject } = require('internal/util');
 const { validateInteger } = require('internal/validators');
 const {
   codes: {
     ERR_OUT_OF_RANGE,
   },
 } = require('internal/errors');
 
-// Lazy-load fd module to avoid circular dependency
-const lazyGetVirtualFd = getLazy(
-  () => require('internal/vfs/fd').getVirtualFd,
-);
-
 /**
  * A readable stream for virtual files.
  */
@@ -133,7 +129,6 @@ class VirtualReadStream extends Readable {
     // Load content on first read (lazy loading)
     if (this.#content === null) {
       try {
-        const getVirtualFd = lazyGetVirtualFd();
         const vfd = getVirtualFd(this.#fd);
         if (!vfd) {
           this.destroy(createEBADF('read'));
@@ -279,7 +274,6 @@ class VirtualWriteStream extends Writable {
    * @param {number} pos The position to set
    */
   #setPosition(pos) {
-    const getVirtualFd = lazyGetVirtualFd();
     const vfd = getVirtualFd(this.#fd);
     if (vfd) {
       vfd.entry.position = pos;