lib: remove usage of require('util')

Remove the usage of `require('util').inspect`.

Refs: #26546

Author: dnlup

lib/internal/encoding.js

@@ -327,7 +327,7 @@ class TextEncoder {
     });
     obj.encoding = this.encoding;
     // Lazy to avoid circular dependency
-    return require('util').inspect(obj, opts);
+    return require('internal/util/inspect').inspect(obj, opts);
   }
 }
 
@@ -530,7 +530,7 @@ function makeTextDecoderJS() {
           obj[kHandle] = this[kHandle];
         }
         // Lazy to avoid circular dependency
-        return require('util').inspect(obj, opts);
+        return require('internal/util/inspect').inspect(obj, opts);
       }
     }));
   Object.defineProperties(TextDecoder.prototype, {