lib: optimize copyError with ObjectAssign in primordials

optimized the copyError function by using ObjectAssign from primordials.
this change replaces the for-loop with ObjectAssign, which improves
memory usage and performance.

this change updates the copyError function in internal/assert.js to
use ObjectAssign for copying properties.

Author: rayark1

lib/internal/assert/assertion_error.js

@@ -6,9 +6,9 @@ const {
   Error,
   ErrorCaptureStackTrace,
   MathMax,
+  ObjectAssign,
   ObjectDefineProperty,
   ObjectGetPrototypeOf,
-  ObjectKeys,
   String,
   StringPrototypeEndsWith,
   StringPrototypeRepeat,
@@ -46,11 +46,8 @@ const kReadableOperator = {
 const kMaxShortLength = 12;
 
 function copyError(source) {
-  const keys = ObjectKeys(source);
   const target = { __proto__: ObjectGetPrototypeOf(source) };
-  for (const key of keys) {
-    target[key] = source[key];
-  }
+  ObjectAssign(target, source);
   ObjectDefineProperty(target, 'message', { __proto__: null, value: source.message });
   return target;
 }