Issue #3443301 by joseph.olstad: Key vault config is too constrained - 128...

Issue #3443301 by joseph.olstad: Key vault config is too constrained - 128 maxlength input needs to be increased

Closes #3447409

modules/azure_key_vault_key_provider/src/Plugin/KeyProvider/AzureKeyVaultKeyProvider.php

@@ -104,12 +104,14 @@ class AzureKeyVaultKeyProvider extends KeyProviderBase implements KeyProviderSet
 
     // If this key type is for an encryption key.
     if ($form_state->getFormObject()->getEntity()->getKeyType()->getPluginDefinition()['group'] == 'encryption') {
+      $configuration = $this->getConfiguration();
+      $default_configuration = $this->defaultConfiguration();
       // Add an option to indicate that the value is stored Base64-encoded.
       $form['base64_encoded'] = [
         '#type' => 'checkbox',
         '#title' => $this->t('Base64-encoded'),
         '#description' => $this->t('Checking this will store the key with Base64 encoding.'),
-        '#default_value' => isset($this->getConfiguration()['base64_encoded']) ? $this->getConfiguration()['base64_encoded'] : $this->defaultConfiguration()['base64_encoded'],
+        '#default_value' => $configuration['base64_encoded'] ?? $default_configuration['base64_encoded'] ?? 0,
       ];
     }