chore: 3386077 Make module compatible with Drupal 10.

src/Form/ExcelImporterForm.php

@@ -265,11 +265,14 @@ class ExcelImporterForm extends FormBase {
    */
   private function isValidTaxonomyReference($bundle, $field, $value) {
     $definitions = \Drupal::service('entity_field.manager')->getFieldDefinitions('node', $bundle);
+    $vid = $this->getVocabulary($bundle, $field);
+    $term = Drupal::entityTypeManager()->getStorage('taxonomy_term')->loadByProperties(['name' => $value, 'vid' => $vid]);
+    $tid = $this->arrayKeyFirst($term);
 
-    if ($definitions[$field]->getSettings()['handler_settings']['auto_create']) {
+    if ($definitions[$field]->getSettings()['handler_settings']['auto_create'] && !empty($value)) {
       return TRUE;
     }
-    elseif ($this->arrayKeyFirst(taxonomy_term_load_multiple_by_name($value, $this->getVocabulary($bundle, $field)))) {
+    elseif ($tid) {
       return TRUE;
     }
 
@@ -347,7 +350,8 @@ class ExcelImporterForm extends FormBase {
 
       if ($target_type == 'taxonomy_term') {
         $vid = $this->getVocabulary($bundle, $field);
-        $tid = $this->arrayKeyFirst(taxonomy_term_load_multiple_by_name($value, $vid));
+        $term = Drupal::entityTypeManager()->getStorage('taxonomy_term')->loadByProperties(['name' => $value, 'vid' => $vid]);
+        $tid = $this->arrayKeyFirst($term);
         $canAutoCreate = $definitions[$field]->getSettings()['handler_settings']['auto_create'];
 
         if ($canAutoCreate && empty($tid)) {