Improve handling of languages for which tests are disabled

adding Clojure to list of disabled languages (tests appear to fail randomly)

test/solidlsp/al/test_al_basic.py

@@ -5,9 +5,9 @@ import pytest
 from solidlsp import SolidLanguageServer
 from solidlsp.ls_config import Language
 from solidlsp.ls_utils import SymbolUtils
-from test.conftest import is_ci
+from test.conftest import language_tests_enabled
 
-pytestmark = [pytest.mark.al, pytest.mark.skipif(not is_ci, reason="AL tests are not run in CI, because they are unstable locally")]
+pytestmark = [pytest.mark.al, pytest.mark.skipif(not language_tests_enabled(Language.AL), reason="AL tests are disabled")]
 
 
 @pytest.mark.al