ci: handle dataset for both ladybug and ladybug-python

Author: adsharma

test/test_helper.py

@@ -1,7 +1,17 @@
 import sys
 from pathlib import Path
 
-LBUG_ROOT = Path(__file__).parent.parent
+_REPO_ROOT = Path(__file__).parent.parent.resolve()
+
+
+def _resolve_lbug_root() -> Path:
+    for candidate in (_REPO_ROOT, *_REPO_ROOT.parents):
+        if (candidate / "dataset").exists():
+            return candidate
+    return _REPO_ROOT
+
+
+LBUG_ROOT = _resolve_lbug_root()
 
 if sys.platform == "win32":
     # \ in paths is not supported by lbug's parser