set default value for reconversion_frequency_help_text to value initialy used in…

set default value for reconversion_frequency_help_text to value initialy used in the code so that clients that did not require change are not impacted by introduction of parameter

src/Migrations/Version20250210154947.php

+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+final class Version20250210154947 extends AbstractMigration
+{
+    public function getDescription() : string
+    {
+        return '';
+    }
+
+    public function up(Schema $schema) : void
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->addSql("
+UPDATE global_parameter
+SET value = 'Fréquence à laquelle je souhaite que la caisse commune de l''alimentation me verse en euros la somme des MonA encaissées dans mon point de vente (1 MonA = 1 euro). Le versement se fait via un virement bancaire.'
+WHERE name = 'RECONVERSION_FREQUENCY_HELP_TEXT'
+");
+    }
+    public function down(Schema $schema) : void
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->addSql("UPDATE global_parameter SET value = null WHERE name='RECONVERSION_FREQUENCY_HELP_TEXT'");
+    }
+}