[FIX] web: Allow accented uppercase characters in sign

Some characters are filtered out for an unknown reason, leading to
strange behavior when the font supports those characters.

closes odoo/odoo#61199

closes odoo/odoo#63290

X-original-commit: 429febb30bb3f5442cf310e836a5e0e6c4bc3e65
Signed-off-by: Olivier Dony (odo) <odo@openerp.com>
Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

addons/web/static/src/js/widgets/name_and_signature.js

@@ -349,8 +349,7 @@ var NameAndSignature = Widget.extend({
      * @returns {string} cleaned name
      */
     _getCleanedName: function () {
-        var regexRemoveSpecialCharacters = /[^\w\u00E0-\u00FC-'" ]/g;
-        var text = this.getName().replace(regexRemoveSpecialCharacters, '');
+        var text = this.getName();
         if (this.signatureType === 'initial') {
             return (text.split(' ').map(function (w) {
                 return w[0];