[TASK] Simplify unit tests configuration

This change simplifies the call of unit tests within solr-ddev-site and EXT:solr CI/Build process.

Author: dkd-kaehm

Build/Test/FunctionalTestsBootstrap.php

@@ -1,5 +1,5 @@
 <?php
 
 DG\BypassFinals::enable();
-require (\Composer\InstalledVersions::getInstallPath('typo3/testing-framework') ?? '')
+require (\Composer\InstalledVersions::getInstallPath('typo3/testing-framework') ?? '../../.Build/vendor/typo3/testing-framework')
     . '/Resources/Core/Build/FunctionalTestsBootstrap.php';

Build/Test/UnitTests.xml

@@ -3,7 +3,7 @@
 	xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/11.4/phpunit.xsd"
 	backupGlobals="true"
 	beStrictAboutTestsThatDoNotTestAnything="false"
-	bootstrap="../../.Build/vendor/typo3/testing-framework/Resources/Core/Build/UnitTestsBootstrap.php"
+	bootstrap="./UnitTestsBootstrap.php"
 	cacheDirectory=".phpunit.cache"
 	cacheResult="false"
 	colors="true"

Build/Test/UnitTestsBootstrap.php

@@ -0,0 +1,4 @@
+<?php
+
+require (\Composer\InstalledVersions::getInstallPath('typo3/testing-framework') ?? '../../.Build/vendor/typo3/testing-framework')
+    . '/Resources/Core/Build/UnitTestsBootstrap.php';