lib: remove unnecessary lazy loading in internal/encoding

PR-URL: #45810
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>

lib/internal/encoding.js

@@ -57,12 +57,7 @@ const {
   decodeUTF8,
 } = internalBinding('buffer');
 
-let Buffer;
-function lazyBuffer() {
-  if (Buffer === undefined)
-    Buffer = require('buffer').Buffer;
-  return Buffer;
-}
+const { Buffer } = require('buffer');
 
 function validateEncoder(obj) {
   if (obj == null || obj[kEncoder] !== true)
@@ -517,14 +512,14 @@ function makeTextDecoderJS() {
       validateDecoder(this);
       if (isAnyArrayBuffer(input)) {
         try {
-          input = lazyBuffer().from(input);
+          input = Buffer.from(input);
         } catch {
           input = empty;
         }
       } else if (isArrayBufferView(input)) {
         try {
-          input = lazyBuffer().from(input.buffer, input.byteOffset,
-                                    input.byteLength);
+          input = Buffer.from(input.buffer, input.byteOffset,
+                              input.byteLength);
         } catch {
           input = empty;
         }