fix: add TCA default 0 to relation selects for MySQL strict mode

public/typo3conf/ext/ep_track/Configuration/TCA/tx_eptrack_domain_model_redirect.php

@@ -39,6 +39,7 @@ return [
 			'label' => 'LLL:EXT:core/Resources/Private/Language/locallang_general.xlf:LGL.language',
 			'config' => [
 				'type' => 'select',
+				'default' => 0,
 				'renderType' => 'selectSingle',
 				'foreign_table' => 'sys_language',
 				'foreign_table_where' => 'ORDER BY sys_language.title',
@@ -53,6 +54,7 @@ return [
 			'label' => 'LLL:EXT:core/Resources/Private/Language/locallang_general.xlf:LGL.l18n_parent',
 			'config' => [
 				'type' => 'select',
+				'default' => 0,
 				'renderType' => 'selectSingle',
 				'items' => [
 					['', 0],