Enable revisionability to the sae_exclude field definition.

Check for revisioned field settings when building the node form.

search_api_exclude.install

+<?php
+
+use Drupal\Core\Field\BaseFieldDefinition;
+
+/**
+ * Make search api exclude node setting revisionable.
+ */
+function search_api_exclude_update_9201(&$sandbox) {
+  $field_definition = BaseFieldDefinition::create('boolean')
+    ->setRevisionable(TRUE)
+    ->setTranslatable(TRUE)
+    ->setLabel(t('Search API Exclude'))
+    ->setDescription(t('Specify whether the node may be indexed or not.'));
+  \Drupal::entityDefinitionUpdateManager()
+    ->installFieldStorageDefinition('sae_exclude', 'node', 'search_api_exclude', $field_definition);
+
+  /** @var \Drupal\Core\Field\BaseFieldDefinition $storage_definition */
+  $storage_definition = \Drupal::entityDefinitionUpdateManager()
+    ->getFieldStorageDefinition('sae_exclude', 'node');
+  $storage_definition->setSetting('revisionable', TRUE);
+  \Drupal::entityDefinitionUpdateManager()
+    ->updateFieldStorageDefinition($storage_definition);
+}