[Translator] Cache is not warmed anymore #2056
Description
Upgrading symfony/ux-translator to v2.19.0 (and running Symfony 6.4.10), we noticed that the var/translations folder and its content was not generated anymore.
The culprit seems to be #1965: our translator service is an alias of translation.default, so TranslatorCompilerPass::hasValidTranslator returns false because ContainerBuilder::hasDefinition does not check aliases.