Override the target language in the parser options, so that it isn’t
looked up from the database; this lets UriLibraryTest avoid database
access. And since the Database group is no longer strictly required,
remove the statement to that effect from the phpdoc again.
Bug: T345372
Change-Id: I79f35257b123eb939d9ab67b16aa56d34586bb67
All LuaEngineTestBase subclasses must be in the Database group, as far
as I can tell it can’t be avoided. (Several already are anyway.) We
can’t centrally do this in the base class anymore (needsDB() can no
longer be overridden), so just add it to the phpdoc here.
Bug: T345372
Change-Id: I47016ec84ed227f755f94a383bee8053975b4c81
