Formularios: noValidate en todos para usar red-response del sitio

Desactiva la validación nativa del navegador ("Rellene este campo", formato de
email) en el resto de formularios (recover, reset-password, trade-points,
rename-guild, transfer-dp, gold, promo, transfer, quest, send-gift, 2FA, restore).
Los errores se muestran como red-form-response (por validación en cliente o del
servidor), consistente con login y create-account. Botones ya gateados por campos.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web-next/components/GoldForm.tsx

@@ -44,7 +44,7 @@ export function GoldForm({ characters, options }: { characters: CharOption[]; op
 
   return (
     <div className="centered">
-      <form onSubmit={handleSubmit} acceptCharset="utf-8">
+      <form noValidate onSubmit={handleSubmit} acceptCharset="utf-8">
         <CharacterSelect characters={characters} value={character} onChange={setCharacter} placeholder={t('selectCharacter')} />
         <br />
         <select value={amount} onChange={(e) => setAmount(e.target.value)} required>