url: improve isURLThis detection

PR-URL: #46866
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Tierney Cyren <[email protected]>
Reviewed-By: Tiancheng "Timothy" Gu <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>

Author: anonrig

lib/internal/url.js

@@ -17,6 +17,7 @@ const {
   ObjectGetOwnPropertySymbols,
   ObjectGetPrototypeOf,
   ObjectKeys,
+  ObjectPrototypeHasOwnProperty,
   ReflectApply,
   ReflectGetOwnPropertyDescriptor,
   ReflectOwnKeys,
@@ -568,6 +569,10 @@ function onParseComplete(flags, protocol, username, password,
   initSearchParams(this[searchParams], query);
 }
 
+function isURLThis(self) {
+  return self != null && ObjectPrototypeHasOwnProperty(self, context);
+}
+
 function onParseError(input, flags) {
   throw new ERR_INVALID_URL(input);
 }