Issue #3403491 by Kingdutch, ankithashetty, BramDriesen, longwave, Berdir,...

Issue #3403491 by Kingdutch, ankithashetty, BramDriesen, longwave, Berdir, mglaman, quietone: Rename EntityReferenceTestTrait breaks multi-version testing

core/modules/field/tests/src/Traits/EntityReferenceTestTrait.php

+<?php
+
+namespace Drupal\Tests\field\Traits;
+
+@trigger_error('The ' . __NAMESPACE__ . '\EntityReferenceTestTrait is deprecated in drupal:10.2.0 and is removed from drupal:11.0.0. Instead, use \Drupal\Tests\field\Traits\EntityReferenceFieldCreationTrait. See https://www.drupal.org/node/3401941', E_USER_DEPRECATED);
+
+/**
+ * Provides common functionality for the EntityReference test classes.
+ *
+ * @deprecated in drupal:10.2.0 and is removed from drupal:11.0.0. Use
+ *    \Drupal\Tests\field\Traits\EntityReferenceFieldCreationTrait instead.
+ *
+ * @see https://www.drupal.org/node/3401941
+ */
+trait EntityReferenceTestTrait {
+
+  use EntityReferenceFieldCreationTrait;
+
+}