6 files declare their use of ModuleUninstallValidatorException in Drupal 10

CommentUninstallTest.php in core/modules/comment/tests/src/Kernel/CommentUninstallTest.php

InstallerNonDefaultDatabaseDriverTest.php in core/tests/Drupal/FunctionalTests/Installer/InstallerNonDefaultDatabaseDriverTest.php

InstallerTest.php in core/tests/Drupal/FunctionalTests/Installer/InstallerTest.php

InstallProfileDependenciesTest.php in core/tests/Drupal/FunctionalTests/Installer/InstallProfileDependenciesTest.php

ModuleHandlerTest.php in core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php

ThemeInstallerTest.php in core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php