Editorial: Forbidden extensions misses a few 402 methods.

spec.html

@@ -24747,7 +24747,7 @@ <h1>Forbidden Extensions</h1>
  Neither mapped nor unmapped arguments objects may be created with an own property named *"caller"*.
  </li>
  <li>
- The behaviour of the following methods must not be extended except as specified in ECMA-402: `Object.prototype.toLocaleString`, `Array.prototype.toLocaleString`, `Number.prototype.toLocaleString`, `Date.prototype.toLocaleDateString`, `Date.prototype.toLocaleString`, `Date.prototype.toLocaleTimeString`, `String.prototype.localeCompare`, %TypedArray%`.prototype.toLocaleString`.
+ The behaviour of the following methods must not be extended except as specified in ECMA-402: `Object.prototype.toLocaleString`, `Array.prototype.toLocaleString`, `Number.prototype.toLocaleString`, `BigInt.prototype.toLocaleString`, `Date.prototype.toLocaleDateString`, `Date.prototype.toLocaleString`, `Date.prototype.toLocaleTimeString`, `String.prototype.localeCompare`, `String.prototype.toLocaleLowerCase`, `String.prototype.toLocaleUpperCase`, %TypedArray%`.prototype.toLocaleString`.
  </li>
  <li>
  The RegExp pattern grammars in <emu-xref href="#sec-patterns"></emu-xref> and <emu-xref href="#sec-regular-expressions-patterns"></emu-xref> must not be extended to recognize any of the source characters A-Z or a-z as |IdentityEscape[+U]| when the <sub>[U]</sub> grammar parameter is present.